Thanks for the response, Miguel.
We only have MSAS 2012 and BI 4.0 SP8.3 so, I won't be able to test other versions.
Yes, the behavior has occurred with other cubes. I believe the issue may be related to the level in question not being the highest level (there are hidden higher levels). And it my be related to calculations being on the active crosstab sheet.
As for logs, can you provide me with detailed how-to instructions? I'll then supply you with any requested logs.
Thanks,
Michael