Some users of my WP-Cumulus plugin have reported issues with the plugin after using WordPress' built in automatic plugin upgrade feature. I do not use this feature due to issues at my host, so I have no way of confirming this, but it appears the swf file gets damaged somehow in the process. Manually installing the newer versions fixes the issue.
Is there any known issue with binary files of swfs specifically? Any workarounds I can inform users about?