As the subject line says I have installed MPLAB 8.30 on RTM W7 Ultimate 7600. The problem I'm seeing is - After clicking on Assemble or Makefile, the tool bar icons disappear, they are not redrawn unless MPLAB is minimised or the mouse run over where the tool bar should be. In fact various parts of the IDE go grey until I force a screen redraw. On my laptop I have W7 Professional as above, and have MPLAB 8.20 installed and have no screen redraw problems at all. In theory the video card in PC is more powerful than the laptop's although physical RAM is 3GB on the laptop and only 2GB on the PC. I only tried MPLAB 8.20 on the W7 RC version, so wonder if 8.30 is the culprit, anyone else have RTM W7 installed and MPLAB? Same machine with XPpro SP3 no redraw problems. Colin -- cdb, on 9/26/2009 -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist