**System Information**
windows 7 pro and graphics card Quadro FX 880M
**Blender Version**
Broken: 2.72b hash9e963ae
**Short description of error**
Doesn't create proper sized proxies in the video editor when different sizes created at the same time
**Exact steps for others to reproduce the error**
load a png sequence 1920x1080 into the video editor and create all the jpg proxy sizes in a custom directory at the same time, they will have wrong very small sizes at 50%, 75%, 100% settings only 25% was correct
when I created the proxy only at 50% it made the proxy size correct