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The only thing I've done to the folder since the catalog was created was to mark it as "Make online-only" with Dropbox, then later mark it as "Make available offline" (i.e. local). But I just tried an "Update folder location" from the browse tab and that fixed things, so I guess I should just make sure to do this after each time I make a folder available onlne again. But on a related note, I can only get the browse dialog be responsive occasionally but not always. At times it is just completely unresponsive to left or right clicks - no arrow twirl-down, no right-click menu, etc. So that makes this solution a little tougher. Don't mean to throw you a two-for-one question, but have you heard of this behavior? Thanks for your help, for sure.
Yes, the browse tab of the organizer. I can get a yellow outline to appear on the Folder Path option (or any other option) but clicking on the arrow to twirl it down or right clicking to get the context menu don't do anything sometimes. Other times they are responsive, which is why I was able to do the Update Folder Location. Thank you.
Just to follow up, in case others are having the same unresponsive click behavior: Turns out it was related to having the Loom service (https://www.loom.com/) running in the background. Not the app itself, just the service. Since I only use Loom infrequently, I disabled its automatic service startup and PM has been working as expected since. Thanks to Andrew from Camera Bits for troubleshooting and figuring this out. Great support.