UBB.threads PHP Forum Software Community Forums UBB.classic UBB.classic 6 Support forum_thread_data - Problem - Need Help

The site ran out of allocated space a few weeks back - not sure if related.
Began having small problems there after - for example: Members not able to send pms or post on various topics.
So I cleaned cache and did a rebuild.

The rebuild for all but rebuild forums works fine - to my knowlege but the 'rebuild forums' displayed

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Could not find a forum_thread_data file for the following thread and forum: (0000 50), 44
at /www/DomainName/cgi-bbs/ubb_lib_files.cgi line 788 main::GetThreadData() called
at /www/DomainName/cgi-bbs/ubb_lib_files.cgi line 589 main::GetForumMetaTopics() called at /www/DomainName/cgi-bbs/ubb_lib_files.cgi line 636 main::GetTodaysActiveTopics called at /www/DomainName/cgi-bbs/ubb_lib_ci.cgi line 96 main::rebuild_tat() called
at /www/DomainName/cgi-bbs/cp2_maint.cgi line 738 main::refreshwrapper_forumstats() called at /www/DomainName/cgi-bbs/cp2_maint.cgi line 279 main::refreshing called at cp.cgi line 526

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I have read through, but support for they most part referred to Older Versions.
It seems like it clears up on its own too. Is this a gho-<img src="https://www.ubbcentral.com/boards/images/graemlins/shocked.gif" alt="" /> -st

I have classic 6.7

If you could please find a little time in enlightnen me on how I can fix this you will have helped thousands of [people]members and eased my troubled ubb.world.

Thanks in Advance
RAMY

Next hint to the problem:

Some forums were operational, some were not displaying the same 'forum_thread_data file ' error found in CP.cgi rebuild.

I uploaded from the original files [downloaded to pc from mem area]- cgi directory:

Resultes -
The forums that were fuctional are still functional and now some additional forums are operational.

Still many forums produce the same [above] error message.

Little help here - Please -
Or suggestions - Things to try that are not intrusive -from those that are not sure what to do either.

Again as always - Thanks In advance
Peace
RAMY

Hint 2.

Isolate:
One forum that was working after the clean upload from org. cgi file diretory.

Hypothsis: [rebuild problem]
I did a 'rebuild forum' - I selected only one [recently functional] forum and now it is back to the error dialog display.

Any suggestionas at all????

Yes, re-check the permissions on your forums to make sure they are 766 or 777 for each (Forum1, Forum2, etc). Your forum should be able to rebuild these files without issues