Hello all.
Made some trivial changes to our Sandbox install (calculated field, added a new view), exported and then attempted to import the .zip into our Production install. On doing so I get the error "The element 'Workflow' has invalid child element 'ProcessTriggers'". Upon digging further into the xml, it looks like this is being caused by one of our Business Process Flows that has been running perfectly fine for multiple versions. I tried importing an older solution into Production (which had previously successfully imported), and I got the same error.
At no point have I edited the xml, so it seems odd that this isn't properly validating anymore - especially on previously versions that were successfully imported. Any suggestions?