HaloMods "Classic" Read-only Archive

Everytime I try to open a campaign map I get the error such and such has happend do you want to continue or quit. I also get can't read end of stream error. I have the latest version and my maps are virgin maps no mods on them. They are on my comps HDD. Any ideas as to why Entity is crashing? All other programs work Dathalo, ADI, Insolence although I can't open the campaign maps in any program. What should I use to open them?

Your disc might be scratched, make sure that you can play them on your xbox. Also you might not have single player shared in your folder, make sure that you have it in the folder that map is in. If not, thats wierd.