While trying to download CSV exports from the VRM portal for a specific installation, all I got in the export was the error message "Another export was started; since only one export may run at any given time this export was cancelled." I've confirmed that no one else with access had tried to download an export at the time, and tried re-downloading from this installation multiple times over 4 days with the same result. Interestingly, this problem isn't present in the other installations and I have been able to download from them just fine.
I also tried automating the downloads using a script and the VRM API which has downloaded every hour over the past 4 days with the same results: the downloads from the other installations worked except for this specific installation. I'm suspecting it's a system issue but still unsure. Would appreciate any input on this!