weird shapes and colors on screen

New to multiboxing and I have been running isboxer on a trial of inner space. After I play wow for about an hour I start to get weird shapes and colors that cover the screen and appear to be in the world. the screens will not be the same at the same time and moving my toons will cause them to change direction etc. the shapes are very geometric and seem to happening on purpose. It always seems to be proceeded by the clickbars growing full screen and flashing etc. Is this because I am playing on a trial or is it something else? I would really like to purchase innerspace to continue but i dont want to waste money on something that doesn't work.

[Alge]

What you describe sounds like GPU artefacts and has nothing to do with ISBoxer. They are generally caused by your video card overheating or your PSU being unable to supply enough power to your GPU. Multiboxing puts more load on your system which is why you probably haven't noticed this issue before.

See this thread for a similar issue.

over heating seems to have been the issue. The fan on my video card was not operating. fixed that and now the problem has gone away. Thank you for your help!