I cannot begin the game.

[hsvelocity]

It keeps saying "SetupDisplayMode Failed: Function call not supported". Why is this? Can someone help?

 

[AirFox]

It keeps saying "SetupDisplayMode Failed: Function call not supported". Why is this? Can someone help?

Wut?
Never saw that error before.
I think you need to reinstall. Or use the launcher to use windowed mode in main options.

EDIT:I think the launcher is not going to work cause of SetupDisplayMode.

 

[Sky The Destroyer]

I think that means the resolution that SRB2 is using is not supported. I think you need to change the resolution via the config.cfg file. Somewhere in your config there should be a line like this.

scr_height "some # here"
scr_width "some # here"

Replace that line with this.

scr_height "640"
scr_width "480"

If the config file already has the above values, change it to something like this.

scr_height "1024"
scr_width "768"

If none of those work, try some other values. If none at all work, it must not be a resolution error...