interesting -- can you take a screenshot of that ? have you moved the PG somewhere else? or done anything? Can you try re-downloading the release?
also, if it continues to not work, can you do "command option - i" to get the debug window
(you might have to hit the rectangle button to get it on the bottom half of the screen) then go to console and copy what it says and paste it back here or in a paste bin ?
for example, my console output says:
/Users/zachlieberman/Desktop/OF_0.9.0/projectGenerator-osx/projectGenerator.app/Contents/Resources/app
app.js:42 /Users/zachlieberman/Desktop/OF_0.9.0/projectGenerator-osx/projectGenerator.app/Contents/Resources
app.js:509 ofPath val /Users/zachlieberman/Desktop/OF_0.9.0
app.js:512 requesting addons
app.js:670 Updated default settings for the PG. (written to settings.json)
app.js:791 Switching GenerateMode to Create...
app.js:670 Updated default settings for the PG. (written to settings.json)
app.js:107 got set addons
app.js:108 Array[17]
app.js:155 got set platforms
app.js:156 Object
app.js:157 got set platforms
thanks...