I am getting javascript error - WebForm_PostBackOptions undefined when trying to update Module Settings on a hosted server -- not Windows Authentication.

There is another thread with the same error but under a different condition:

"I am getting javascript error - WebForm_PostBackOptions undefined while access the web site using windows authentication. This site works fine if i remove the windows authentication. Does anyone have any idea? I tried to copy webresource.axd file but in vain."

Has anyone else experienced either one of these errors?

How do I resolve it? (mine is not windows authentication)

It's 4.4.0; I disabled compression and whitespace filter.  I couldn't find viewstate storage but if you are referring to Page State Persistence, I even changed that from Page to Memory and with all these changes, after clearing the cache and restarting the application, the error remians when I try to update module settings.  Page State Persistence needs to be page anyway for some modules I have use viewstate.

OK, that worked; thank you very much for your help!

Does this mean there is a bug in one of the dnn performance settings?  Should this be entered into Gemini?

I did set the viewstate back to page instead of memory and that works fine.

Any others experience this error?