I am crazy with this error message:

Parameter count does not match Parameter Value count.

Last night, my site had a problem and I was unable to access. I sent ticket to host provider. And it was accessible this morning. Everything seemed to be ok. However, there was that error message in almost of pages after 2 hours. It made me crazy. I had to send a ticket to host provider again. And it is ok now.

I am not sure if this is DNN error or server error. T_T

I posted it not for an answer. I just want to shout to make me feel better.

The error was displayed in content pane. The content of almost modules was disappeared althought there was module title.

I also found some thread about that error in this forum, mostly in Repository module area. However, it seems that there is no clear answer. And this error also occurred to pages that don't have Repository module in my site.

Although I'm not convinced that this is the case here, I have seen this issue with (i) a module installation gone awry, (ii) an older version of a module installed on top of a newer one, and (iii) a failed or partially-completed core upgrade with an inconsistent final state.  There is likely a version mismatch for some reason between the data provider view of a SP and an actual implementation of the SP itself.

Brandon