Error BC30560 no compiled code on invoke workflow file

I’ve created a library to access Google Bigquery data. But when I try to access the Library activity I get this error: Invoke Workflow File: No compiled code to run
error BC30560: ‘ExtensionAttribute’ is ambiguous in the namespace ‘System.Runtime.CompilerServices’. At line -22
error BC30560: ‘ExtensionAttribute’ is ambiguous in the namespace ‘System.Runtime.CompilerServices’. At line -7
error BC30560: ‘ExtensionAttribute’ is ambiguous in the namespace ‘System.Runtime.CompilerServices’. At line 8

I’ve googled it at no success.

I’m working with the latest version of uipath studio 2019.4.4

Thanks!

1 Like

I’ve got this problem too - think it may be something to do with dependencies being at different versions across files but not sure. Did you resolve it?