Error on search application

I am having an issue where I try to change a field type from Integer to Select so I can have a drop down box in the search function. as soon as I make the change I get the following error.

Fatal error: Call to a member function GetTag() on null in C:\Program Files (x86)\NetMake\v81\wwwroot\scriptcase\devel\class\p age
mPageFld.class.php on line 7130

anyone knows why I am getting this error?

I checked on a previous forum someone suggesting to change the theme of the application, I have done so and hasn’t fixed the issue

furthermore I have created a new search application to test it and I get the error as well. Also when I try to setup the same in the search function of a grid application

I think it might be related with the updates applied to scriptcase from yesterday to today?

High chances it is cause by the latest update (version 8.1.0.59.), i am having the same issue as well