Java problems

whenever I open a java based app (like an installer or the app it installs) I can't see anything! This just happened randomly. I installed this app, it ran and looked just fine. Then later I went to use it again and it was all blank! I unstalled it (the best I could without being able to see the uninstaller) and re-downloaded everything but I still have the same problem! I can't even see the Java Preferences window to see if some setting go changed. Please help me!

this should look like a regular installer, with the steps on the left and info in the middle


this one obviously should have a yes button somewhere too


thats the other thing, I can see "cancel" and "quit" but nothing else

bump, anyone know anything about this problem?

tried updating Java, but the instructions are confusing