We have a RadGrid with filtering enabled; the page is ajaxified and includes a RadWindowManager as well.
We've been using filtering for a while now with no problem. However, here the filtering fails with an error message:
Error: Sys.WebForms.PageRequestManagerServerErrorException: Conversion from type 'Pair' to type 'String' is not valid.
Anyone has encountered this kind of error message?
The only difference from other RadGrids where filtering works without a problem is the RadWindowManagers. Is there a conflict we're not aware of?
Thanks in advance.