Make sure you are on these settings:
-Safe mode*
-Fixed screen size
-Lowest Detail
-Processor speed Very Low or Low
*To get the client to load safe mode, as soon as you click "Finish" in the set-up GUI and Runescape starts to load, click the screen and mash S as fast as possible. Keep mashing S until the bot GUI pops up. You should be in Safe Mode after this.
Many bots aren't coded for not fixed or not safe mode. It's possible SorcGarden Pro is one of these. However, it's possible that the bot developed a fatal bug in the last 48 hours since I last loaded the client. If that's the case, be patient. The developer of that bot is one of the best developers of the NeXus client, and it should be fixed soon.