Do we have any limit to hiddenpost process module, when I increase search in the param "search" it gives error in IE7 "System cannot locate the resource specified". It works fine with IE8 and firefox. Even when I try to run the query in search bar it works fine. Is this a known bug?
No this is not known, but Im able to reproduce what may be the same bug in IE8. Is your postProcess search longer than about 4,900 characters? Cause that's how long it has to be before I start seeing any problems.
If I render the results in the SimpleResultsTable with a postProcess search that long or longer, I get the error
"Server reported HTTP status=414 while getting mode=results exceeded max_method_size"
I suspect that on IE7 the same thing is happening but you're getting a less useful error. I'll file something for it to get investigated.