Cannot create unknown type exeption

Help
1

Hi,

I am facing below issue, I have V7 compatibility pack but still facing same issue,

Please some advice the cause of the issue

Cannot create unknown type '{http://schemas.microsoft.com/netfx/2009/xaml/activities}Variable({http://schemas.catelproject.com}Window

2

Hi @ssirigann

I hope this might be useful for you.
Refer this link.

3

Hi,

I have refer that article and ,what ever mention in the article I have that already.

But still same issue.