diff --git a/services/web/client/source/class/osparc/component/form/PortInfoHint.js b/services/web/client/source/class/osparc/component/form/PortInfoHint.js
new file mode 100644
index 00000000000..1068a445436
--- /dev/null
+++ b/services/web/client/source/class/osparc/component/form/PortInfoHint.js
@@ -0,0 +1,48 @@
+/* ************************************************************************
+
+   osparc - the simcore frontend
+
+   https://osparc.io
+
+   Copyright:
+     2022 IT'IS Foundation, https://itis.swiss
+
+   License:
+     MIT: https://opensource.org/licenses/MIT
+
+   Authors:
+     * Odei Maiz (odeimaiz)
+
+************************************************************************ */
+
+qx.Class.define("osparc.component.form.PortInfoHint", {
+  extend: osparc.ui.hint.InfoHint,
+
+  statics: {
+    ERROR_ICON: "@MaterialIcons/error_outline/14"
+  },
+
+  properties: {
+    portErrorMsg: {
+      check: "String",
+      init: null,
+      nullable: true,
+      apply: "__applyPortErrorMsg"
+    }
+  },
+
+  members: {
+    __applyPortErrorMsg: function(errorMsg) {
+      let text = this.getHintText();
+      if (errorMsg) {
+        const color = qx.theme.manager.Color.getInstance().resolve("failed-red");
+        text += `<br><br><font color="${color}">${errorMsg}</font>`;
+      }
+      this._hint.setText(text);
+      this.set({
+        source: errorMsg ? this.self().ERROR_ICON : osparc.ui.hint.InfoHint.INFO_ICON,
+        textColor: errorMsg ? "failed-red" : "text"
+      });
+    }
+  }
+});
diff --git a/services/web/client/source/class/osparc/component/form/renderer/PropForm.js b/services/web/client/source/class/osparc/component/form/renderer/PropForm.js
index 13a0876b65c..09a273cc048 100644
--- a/services/web/client/source/class/osparc/component/form/renderer/PropForm.js
+++ b/services/web/client/source/class/osparc/component/form/renderer/PropForm.js
@@ -382,6 +382,14 @@ qx.Class.define("osparc.component.form.renderer.PropForm", {
       this.fireEvent("changeChildVisibility");
     },
 
+    setPortErrorMessage: function(portId, msg) {
+      const infoButton = this._getInfoFieldChild(portId);
+      if (infoButton && "child" in infoButton) {
+        const infoHint = infoButton.child;
+        infoHint.setPortErrorMsg(msg);
+      }
+    },
+
     retrievingPortData: function(portId) {
       const status = this._retrieveStatus.retrieving;
       if (portId) {
diff --git a/services/web/client/source/class/osparc/component/form/renderer/PropFormBase.js b/services/web/client/source/class/osparc/component/form/renderer/PropFormBase.js
index cb455ffdd97..f7f5f4de392 100644
--- a/services/web/client/source/class/osparc/component/form/renderer/PropFormBase.js
+++ b/services/web/client/source/class/osparc/component/form/renderer/PropFormBase.js
@@ -244,7 +244,7 @@ qx.Class.define("osparc.component.form.renderer.PropFormBase", {
     },
 
     _createInfoWHint: function(hint) {
-      const infoWHint = new osparc.ui.hint.InfoHint(hint);
+      const infoWHint = new osparc.component.form.PortInfoHint(hint);
       return infoWHint;
     },
 
@@ -328,6 +328,10 @@ qx.Class.define("osparc.component.form.renderer.PropFormBase", {
       return this._getLayoutChild(portId, this.self().GRID_POS.LABEL);
     },
 
+    _getInfoFieldChild: function(portId) {
+      return this._getLayoutChild(portId, this.self().GRID_POS.INFO);
+    },
+
     _getCtrlFieldChild: function(portId) {
       return this._getLayoutChild(portId, this.self().GRID_POS.CTRL_FIELD);
     },
diff --git a/services/web/client/source/class/osparc/data/model/Node.js b/services/web/client/source/class/osparc/data/model/Node.js
index 08f043bef3e..a8fe1e36582 100644
--- a/services/web/client/source/class/osparc/data/model/Node.js
+++ b/services/web/client/source/class/osparc/data/model/Node.js
@@ -150,6 +150,14 @@ qx.Class.define("osparc.data.model.Node", {
       nullable: false
     },
 
+    errors: {
+      check: "Array",
+      init: [],
+      nullable: true,
+      event: "changeErrors",
+      apply: "__applyErrors"
+    },
+
     // GUI elements //
     propsForm: {
       check: "osparc.component.form.renderer.PropForm",
@@ -712,29 +720,41 @@ qx.Class.define("osparc.data.model.Node", {
       return outputsData;
     },
 
-    setErrors: function(errors) {
-      errors.forEach(error => {
-        const loc = error["loc"];
-        if (loc.length < 2) {
-          return;
-        }
-        if (loc[1] === this.getNodeId()) {
-          const errorMsgData = {
-            nodeId: this.getNodeId(),
-            msg: error["msg"],
-            level: "ERROR"
-          };
-          if (loc.length > 2) {
-            const portKey = loc[2];
-            if ("inputs" in this.getMetaData() && portKey in this.getMetaData()["inputs"]) {
-              errorMsgData["msg"] = this.getMetaData()["inputs"][portKey]["label"] + ": " + errorMsgData["msg"];
-            } else {
-              errorMsgData["msg"] = portKey + ": " + errorMsgData["msg"];
+    __applyErrors: function(errors) {
+      if (errors && errors.length) {
+        errors.forEach(error => {
+          const loc = error["loc"];
+          if (loc.length < 2) {
+            return;
+          }
+          if (loc[1] === this.getNodeId()) {
+            const errorMsgData = {
+              nodeId: this.getNodeId(),
+              msg: error["msg"],
+              level: "ERROR"
+            };
+
+            // errors to port
+            if (loc.length > 2) {
+              const portKey = loc[2];
+              if (this.hasInputs() && portKey in this.getMetaData()["inputs"]) {
+                errorMsgData["msg"] = this.getMetaData()["inputs"][portKey]["label"] + ": " + errorMsgData["msg"];
+              } else {
+                errorMsgData["msg"] = portKey + ": " + errorMsgData["msg"];
+              }
+              this.getPropsForm().setPortErrorMessage(portKey, errorMsgData["msg"]);
             }
+
+            // errors to logger
+            this.fireDataEvent("showInLogger", errorMsgData);
           }
-          this.fireDataEvent("showInLogger", errorMsgData);
-        }
-      });
+        });
+      } else if (this.hasInputs()) {
+        // reset port errors
+        Object.keys(this.getMetaData()["inputs"]).forEach(portKey => {
+          this.getPropsForm().setPortErrorMessage(portKey, null);
+        });
+      }
     },
 
     // post edge creation routine
diff --git a/services/web/client/source/class/osparc/data/model/Study.js b/services/web/client/source/class/osparc/data/model/Study.js
index 9fca6868e7f..8fa66a0f0eb 100644
--- a/services/web/client/source/class/osparc/data/model/Study.js
+++ b/services/web/client/source/class/osparc/data/model/Study.js
@@ -375,9 +375,9 @@ qx.Class.define("osparc.data.model.Study", {
       }
       if (node && "errors" in nodeUpdatedData) {
         const errors = nodeUpdatedData["errors"];
-        if (errors && errors.length) {
-          node.setErrors(errors);
-        }
+        node.setErrors(errors);
+      } else {
+        node.setErrors([]);
       }
     },
 
diff --git a/services/web/client/source/class/osparc/navigation/PrevNextButtons.js b/services/web/client/source/class/osparc/navigation/PrevNextButtons.js
index b5a3b4f6ec4..cf80868bcf6 100644
--- a/services/web/client/source/class/osparc/navigation/PrevNextButtons.js
+++ b/services/web/client/source/class/osparc/navigation/PrevNextButtons.js
@@ -40,7 +40,7 @@ qx.Class.define("osparc.navigation.PrevNextButtons", {
     NEXT_BUTTON: "@FontAwesome5Solid/arrow-right/32",
     RUN_BUTTON: "@FontAwesome5Solid/play/32",
     BUSY_BUTTON: "@FontAwesome5Solid/circle-notch/32",
-    SELECT_FILE_BUTTON: "@FontAwesome5Solid/arrow-right/32"
+    SELECT_FILE_BUTTON: "@FontAwesome5Solid/file-medical/32"
   },
 
   properties: {
diff --git a/services/web/client/source/class/osparc/ui/basic/NodeStatusUI.js b/services/web/client/source/class/osparc/ui/basic/NodeStatusUI.js
index 303c5c4aaca..fb15a827d9d 100644
--- a/services/web/client/source/class/osparc/ui/basic/NodeStatusUI.js
+++ b/services/web/client/source/class/osparc/ui/basic/NodeStatusUI.js
@@ -70,6 +70,15 @@ qx.Class.define("osparc.ui.basic.NodeStatusUI", {
       } else {
         this.__setupBlank();
       }
+      node.bind("errors", this, "toolTipText", {
+        converter: errors => {
+          let errorsText = "";
+          if (errors) {
+            errors.forEach(error => errorsText += error["msg"] + "<br>");
+          }
+          return errorsText;
+        }
+      });
     },
 
     __setupComputational: function() {
diff --git a/services/web/client/source/class/osparc/ui/hint/InfoHint.js b/services/web/client/source/class/osparc/ui/hint/InfoHint.js
index 3deec732d72..cf3ad6e260c 100644
--- a/services/web/client/source/class/osparc/ui/hint/InfoHint.js
+++ b/services/web/client/source/class/osparc/ui/hint/InfoHint.js
@@ -25,7 +25,9 @@ qx.Class.define("osparc.ui.hint.InfoHint", {
    * @extends osparc.ui.basic.IconButton
    */
   construct: function(hint) {
-    this.base(arguments, "@MaterialIcons/info_outline/14");
+    this.base(arguments, this.self().INFO_ICON);
+
+    this.__createHint();
 
     this.bind("hintText", this, "visibility", {
       converter: hintText => (hintText && hintText !== "") ? "visible" : "excluded"
@@ -36,6 +38,10 @@ qx.Class.define("osparc.ui.hint.InfoHint", {
     }
   },
 
+  statics: {
+    INFO_ICON: "@MaterialIcons/info_outline/14"
+  },
+
   properties: {
     hintText: {
       check: "String",
@@ -46,35 +52,39 @@ qx.Class.define("osparc.ui.hint.InfoHint", {
   },
 
   members: {
-    __applyHintText: function(hintText) {
-      if (hintText && hintText !== "") {
-        const hint = new osparc.ui.hint.Hint(this, hintText).set({
-          active: false
-        });
-
-        const showHint = () => hint.show();
-        const hideHint = () => hint.exclude();
-
-        // Make hint "modal" when info button is clicked
-        const tapListener = event => {
-          if (osparc.utils.Utils.isMouseOnElement(hint, event)) {
-            return;
-          }
-          hideHint();
-          document.removeEventListener("mousedown", tapListener);
-          this.addListener("mouseover", showHint);
-          this.addListener("mouseout", hideHint);
-        };
+    _hint: null,
+
+    __createHint: function() {
+      const hint = this._hint = new osparc.ui.hint.Hint(this).set({
+        active: false
+      });
 
+      const showHint = () => hint.show();
+      const hideHint = () => hint.exclude();
+
+      // Make hint "modal" when info button is clicked
+      const tapListener = event => {
+        if (osparc.utils.Utils.isMouseOnElement(hint, event)) {
+          return;
+        }
+        hideHint();
+        document.removeEventListener("mousedown", tapListener);
         this.addListener("mouseover", showHint);
         this.addListener("mouseout", hideHint);
-        this.addListener("tap", () => {
-          showHint();
-          document.addEventListener("mousedown", tapListener);
-          this.removeListener("mouseover", showHint);
-          this.removeListener("mouseout", hideHint);
-        }, this);
-      }
+      };
+
+      this.addListener("mouseover", showHint);
+      this.addListener("mouseout", hideHint);
+      this.addListener("tap", () => {
+        showHint();
+        document.addEventListener("mousedown", tapListener);
+        this.removeListener("mouseover", showHint);
+        this.removeListener("mouseout", hideHint);
+      }, this);
+    },
+
+    __applyHintText: function(hintText) {
+      this._hint.setText(hintText);
     }
   }
 });