Okay, this one has got me stumped: Running the grabber if full-screen mode (on NT4-SP6) exhibits a peculiar fault in-as-much as NO fonts are visible. The screen appears to be rendering correctly: boxes, lines, even underlines under menu hotkeys, but no fonts! If I run it in a windowed mode, everything works correctly.

Anyone got any ideas?

I've run across the same problem myself with Windows XP. Windowed mode gives me problems too, although as I roll my mouse over the menu it works.

However, as of Allegro 4.0.2 (or perhaps 4.0.1) it seemed to be corrected. Which version are you using?

Do color fonts get displayed? (Try either the setup program or the demo game). I think this is a problem with the video drivers as opposed to anything else - can you notice any other strange behaviour in the test program (tests/test.exe)?

OK, this is either a bug in the Windows implementation of Allegro, or your graphics driver. I have emailed the Conductors list to see if anybody there recognises the problem; if not, the chances are your graphics drivers are at fault.

While waiting for a response, can you try getting some updated drivers from ATI? (Alternatively, if you have the latest drivers, try some older ones to see if they have a problem). ATI also have some information about known problems with each release of their drivers; check to see if this problem is mentioned.