Android Question XtraViews problem.

Hi all. It had been awhile for me to code in B4A.
So I opened my app to add some functions. When out of the blue an error occurd regarding xtraviews. Ad for the live of me I cant figure it out.

sub Globals
Dim SupplementDialog As DialogView

Sub Cmd_Omschrijving_Click
Dim DialogLayout As DialogViewLayout
DialogLayout = SupplementDialog.LoadLayout("m3_supplement")

It crashes on the last line:
java.lang.ClassCastException: class java.lang.Short cannot be cast to class java.lang.Boolean (java.lang.Short and java.lang.Boolean are in module java.base of loader 'bootstrap')

xtraviews ver 2.70

please advice.