Temporary internet files and Inkscape (development version)

Hello!

I tried to make the current Inkscape development version portable which worked pretty good except of one thing: It seems that Inkscape is creating a folder in Temporary Internet Files for some icons (e.g. Temporary Internet Files\inkscape\icons\16x16\bitmap-trace.png).
Does someone of you have an Idea if there is a possibility to handle this folder?

Regards,
Leon