Temporary jarfiles are not properly deleted on either my Windows 7 machine or Windows Vista. This causes a buildup of many hundreds of files. Doesn't seem to be a permissions issue because the app can write to the folder fine, and I have no problem deleting the files manually. Runtime I get dozens of the following warnings:
WARN - ModuleUtil.getResourceFromInnerJar(1195) |2015-03-07 20:39:43,509| Could not delete temporary jarfile: C:\Users\Kris\AppData\Local\Temp\tempFile2575708836078097684jar
Saptarshi Purkayastha reported seeing the same issue recently in master.