Getting error while opening an existing project

Help
1

Could not find type ‘IsTrue’ in namespace ‘http://schemas.microsoft.com/workflow/2012/07/xaml/activities’. Row: 334, Column: 28

already installed all the available packages which includes Microsoft.Activities.Extentions Can anyone tell what else could be done.

2

I got this error when I moved my project to a different machine. Check if you have any package updates or try uninstalling Microsoft.Activties and resintalling it.

1 Like
3

Thanks. It worked

4

I also have same issues. The error message :
“message”: “System exception. Retry: 0. Cannot create unknown type ‘{http://schemas.microsoft.com/workflow/2012/07/xaml/activities}SplitString’. at Source: Invoke workflow file: UiPath.Core.Activities”,
try uninstalling Microsoft.Activties and resintalling it, but it does not work. Have any idea to solve?

5

I think you are trying to open a project/workflow built with a newer version of studio, on an older version of studio that does not have all the activities used in the project/workflow

6

I also having same issue, some of the workflows not able to recognize with newer version of Uipath.

Code developed on v7 version and my current version is V8 .

Error : Could not find type ‘SplitString’ in namespace ‘http://schemas.microsoft.com/workflow/2012/07/xaml/activities’. Row: 535, Column: 36

Solution : Install ‘UIPath.V7.Activities’ ( V7 Compatibility pack) . it works.