Every Tuesday, Jagex tries to release an update. These updates sometimes mess up all the bots and you are unable to run it. Usually, the bots are back up very fast but it can take up to a whole day. This really only applies to after updates.
If the issue is more than a day after an update, then I could try to help you or you can go to the support forum where you got it from and post a thread.
-Support Forums-
NeXus Bots
Auto[BOT] Pro
http://rsbots.net/forums
Perfect Bots
http://forums.rsbotting.com/
Auto[BOT] NX
http://www.autofightertalk.com/
[BOT] Bot
http://rs2botting.com/forum/
[BOT] CS
http://www.rsbot.com/forum/forum.php
Carbon[BOT]
http://carbonbots.com/Forum/index.php
ABOUT 60% OF THE BOTS ARE THE SAME ON EACH SITE THUS YOU CAN POST ON OTHER FORUM
RSBot
http://www.powerbot.org/vb/
RSBuddy
http://rsbuddy.com/forum/
If the issue is more than a day after an update, then I could try to help you or you can go to the support forum where you got it from and post a thread.
-Support Forums-
NeXus Bots
Auto[BOT] Pro
http://rsbots.net/forums
Perfect Bots
http://forums.rsbotting.com/
Auto[BOT] NX
http://www.autofightertalk.com/
[BOT] Bot
http://rs2botting.com/forum/
[BOT] CS
http://www.rsbot.com/forum/forum.php
Carbon[BOT]
http://carbonbots.com/Forum/index.php
ABOUT 60% OF THE BOTS ARE THE SAME ON EACH SITE THUS YOU CAN POST ON OTHER FORUM
RSBot
http://www.powerbot.org/vb/
RSBuddy
http://rsbuddy.com/forum/