Environment: Windows 7 Professional, SP1

Browser: Firefox ESR 24.6.0 ESR (corporate approved version) or Chrome Version 35.0.1916.153 m

Java 7 V60 (also automagically installed by corporate)

We used to be able to click the three grey dots in the Agile board view and select Atttach Screenshot and there would be a box where we could paste a clipped image. Now the container doesn't appear and clicking either the PrtScn button or Ctrl + V buttons does nothing. (see attachment: attachattempt.jpg). Entering a filename and clicking Upload generates a 500 error. (see attacherror.jpg, below)

I didn't change the system permissions. Adding attachments is still enabled. What happened and how do I get the ability to attach screenshots back? (Yes, I know I can save them and attach the file, but that's not quite as convenient).

I tried opening an issue and using More-->Attach Screenshot and it appears to be working properly.

We first noticed this problem around mid-June, 2014