[Rwp] Reaper 5.01 on OS X, unable to change slider values

[Patrick Perdue]

Hi all:

It’s been a while since I’ve messed with Reaper on Mac, and just installed a fresh copy of 5.01-64 on OS X 10.10.5.
It seems I am unable to effectively move any sliders. If the associated slider has an edit box to change the value, such as some parameters in the built-in Reaper VSTs, I can change those, but I can’t seem to move the sliders themselves. Anyone else seen this behavior, and know of a work-around?