diff --git a/FemDesign.Grasshopper/Model/ModelReadFromFile.cs b/FemDesign.Grasshopper/Model/ModelReadFromFile.cs
index 6c4d6900e..cfd8d4bca 100644
--- a/FemDesign.Grasshopper/Model/ModelReadFromFile.cs
+++ b/FemDesign.Grasshopper/Model/ModelReadFromFile.cs
@@ -29,18 +29,29 @@ protected override void SolveInstance(IGH_DataAccess DA)
         {
             // get indata
             string filePath = null;
-            if (!DA.GetData(0, ref filePath))
+            DA.GetData(0, ref filePath);
+
+
+            if (_FileName.IsASCII(filePath))
+                this.AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "File path has special characters. This might cause problems.");
+
+
+            bool fileExist = OnPingDocument().IsFilePathDefined;
+            if (!fileExist)
             {
-                return;
+                // hops issue
+                //var folderPath = System.IO.Directory.GetCurrentDirectory();
+                string tempPath = System.IO.Path.GetTempPath();
+                System.IO.Directory.SetCurrentDirectory(tempPath);
             }
-
-            if (filePath == null)
+            else
             {
-                return;
+                filePath = OnPingDocument().FilePath;
+                var currentDir = System.IO.Path.GetDirectoryName(filePath);
+                System.IO.Directory.SetCurrentDirectory(currentDir);
             }
 
-            if (_FileName.IsASCII(filePath))
-                this.AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "File path has special characters. This might cause problems.");
+
 
 
             Model model = null;