Open pbix failure: Decoder Fetch Uncompressed Data failed... error code 9, DecoderCorruptedData
Glad that worked for you!
What month's release are you working with right now? Are you on the most recent?
In my testing, saving the existing file using the latest release seems to cause the issue. It would save but upon reopening it would give one of several errors. One error stated that I needed to reduce or simply the queries in PoweryQuery. Another error made reference to a JSON issue.
After I rolled the file and software back, it gave me 0 issues. I assume I am going to have continue using the April release and testing each subsequent release for these issues.
Something significant happened in the last couple of months because if I save an existing file with the July release and try to open it with the April it is no longer compatible, if you try to open it with the July release it spits out errors. Should be stated that my model is a behemoth with over 100 queries.