Issue in installation of community edition

Help
1

HI ,

I have downloaded and tried installing community version and i get error says : Fialed to start UIstudio

And object ref not set to instance of an object

Log message says : 04:38:23:767 => [ERROR] [UiPath.Workflow.Logging.StudioTraceListener] [13] System.IO.FileNotFoundException: Could not find file ‘C:\Users\user\AppData\Local\UiPath\UiStudio.settings’.

05:49:23:123 => [INFO] [Orchestra.Services.ShellService] [8] Starting UiPath Studio v18.1.1.13 (18.1.1+Branch.master.Sha.de87732381cd2091d42f8be76065b63215a94e6c)
05:49:30:127 => [ERROR] [Orchestra.Services.ShellService] [4] An unexpected error occurred, shutting down the application | [TargetInvocationException] System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. —> System.Windows.Markup.XamlParseException: The invocation of the constructor on type ‘ActiproSoftware.Windows.Controls.Ribbon.Ribbon’ that matches the specified binding constraints threw an exception. —> System.TypeInitializationException: The type initializer for ‘ActiproSoftware.Windows.Controls.Ribbon.Ribbon’ threw an exception. —> System.TypeInitializationException: The type initializer for ‘System.Windows.Media.Fonts’ threw an exception. —> System.IO.FileFormatException: No FontFamily element found in FontFamilyCollection that matches current OS or greater: Windows7SP1 —> System.IO.FileFormatException: No FontFamily element found in FontFamilyCollection that matches current OS or greater: Windows7SP1

05:49:30:131 => [INFO] [Orchestra.Services.MessageService] [4] Showing message to the user:

An unexpected error occurred while starting UiPath Studio. Unfortunately it needs to be closed.

Please try restarting the application. If this error keeps coming up while starting the application, please contact support.

05:51:20:777 => [ERROR] [UiPath.Workflow.Logging.StudioTraceListener] [4] System.NullReferenceException: Object reference not set to an instance of an object.
at UiPath.Workflow.ViewModels.ShellViewModel.CanClose(Action`1 callback)

Can anyone help on this?

2

Hi @Rajarajan1087,

You can first check if any thread with the same issues have been opened and try using it. I can find it here the same issue been reported and it’s solution. Can you check that?

Regards,
V

1 Like
3

Revoke .net framework version to 4.7 …and restart …try installing …it works

1 Like
4

Thank you @Rajarajan1087 this worked for me, the steps I followed for clarity:

  1. Unistall Microsoft .Net 4.7.1
  2. Reboot
  3. Download Microsoft .Net 4.7 from the following link:
    https://www.microsoft.com/en-us/download/details.aspx?id=55170
  4. Install Microsoft .Net 4.7
  5. Reboot

After following the above UiPath Studio started running fine.