Posted May 05, 2014
Yes, that's right, and the cause is that is uses an older version of nGlide which has fewer options for gamma. So if you have any other games using newer versions of nGlide then you'll need to reset the configurator for them too, each and every time you play an nGlide game.
IronArcturus: I was able to fix the black screen problem by changing the nGlide Gamma to 1.0 or higher. I used the version of nGlide that Sin Gold has installed by default.
I passed the info over to GOG support as in my post above but apparently the latest version of nGlide doesn't work on all their test rigs so it wasn't included in their package. For me it works fine, though, so I replaced the nGlide version provided by GOG for SiN with the latest one. Now all my nGlide games use the same version.
I still wish nGlide would go back to using .ini files so that they could be controlled on a per game basis using the nGlide files inside each game's installation folder. Using the registry to store the settings has broken different version compatibility when they changed the number of options for gamma.