This came from TheBrainSupport as steps to resolve the issue (I was cc'd when I forwarded Ganby's google group post to TheBrain Support).
Hope it helps. This is caused by a corrupt font in Windows that Java cannot load. There are several ways to fix this problem, listed below in the order we recommended applying them. Before applying any of the fixes below, backup your fonts folder. This folder is normally located at C:\Windows\fonts. 1. Look for Known Problematic Fonts and Delete Them ameb____.TTF bd______.TTF bdb_____.TTF bdbi____.TTF bdri____.TTF bl______.TTF CA__*.TTF CHLORINZ.TTF CM__*.TTF cpb_____.TTF dinen___.TTF eubex___.TTF euex____.TTF ft,i____.TTF ftb_____.TTF ftbi____.TTF gmm_____.TTF gmmi____.TTF gmr_____.TTF gmri____.TTF lucen.ttf lw___,__.TTF MG______.TTF mg______.TTF mh______.TTF op_____.TTF opb_____.TTF opbo____.TTF opo_____.TTF timb____.ttf timbi___.ttf timi____.ttf timr____.ttf tl_____.TTF If you find any of fonts listed above, delete them, reboot and try starting PersonalBrain again. If not, or if it still does not work, proceed to step 2. 2. Remove and Reinstall Fonts · Delete all all fonts o Make sure you have backed up the contents of your fonts folder. o Open a command prompt. Start > Run > Type "cmd" o Type the following: cd c:\windows\fonts o Verify that you are in the fonts folder. It should say c:\windows\fonts at the bottom of the screen. o Once you are sure you are in the correct folder, type: del *.* o Close the command prompt. · Reinstall fonts o Open the folder where you backed up the fonts to o Edit > Select All o Edit > Copy o Open the C:\Windows\fonts folder o Edit > Paste o If you are prompted about fonts that are already installed, just click Cancel Reboot and try starting PersonalBrain again. If this still does not work, proceed to step 3. 3. Remove Non-Essential Fonts Again, make sure you have backed up your fonts folder. Delete all TrueType fonts in your C:\Windows\fontsfolder except for those that come with Windows. The TrueType fonts can end with the file extension .TTF. Do not delete fonts that do not end with .TTF or are on the following list: -Terminal -Fixedsys -Arial -Comic Sans -Courier -Georgia -MS Serif -Small Fonts -MS Sans Serif -Palatino -Symbol -System -Tahoma -Times New Roman -Verdana -Trebuchet -Webdings -Wingdings Reboot and try starting PersonalBrain again. You may reinstall the fonts you deleted by copying them back into the fonts folder, however note that one of the uninstalled fonts is the cause of the issue, so you may want to reinstall one at a time so you can identify the problematic font.
Java SE 6