Has anyone ever encountered an error uninstalling a SuiteApp? I have attempted to uninstall and it has failed, leaving me unable to re-install the SuiteApp. I have submitted an SDN support case but hoping to gain some insight from some of you.

Yes, but I don't recall what the errors were. I think I had to manually rename/re-id some of the records and then try again. Might have been because of dependency records but I don't recall. Also just be aware that an uninstall removes all customization and data. Nothing is saved.