I used the latest one that was posted in History and Changelog so v1.5. The one thing that I didn't do was upgrade Chameleon to RC5. Last time I upgraded to RC5 is got a kernel panic on boot and I wasn't able to get into OS X. I created a time machine backup this time so maybe I'll try and update to RC5 and if something goes wrong I'll revert to my backup and post my results here. Thanks for you help.
EDIT:
So I've installed Chameleon RC5 (I haven't rebooted yet), however, when I run EDP in Terminal and select option for fixes and then option 1 for the Touch and other fixes OS X throws erros
'The system extension "/System/Library/Extensions/AppleHDA.kext" was installed improperly and cannot be used. Please try reinstalling ir, or contact the product's vendor for an update.'
and
'The system extension "/System/Library/Extensions/AppleHDA.kext/Contents/Plugins/AppleHDAController.kext" was installed improperly and cannot be used. Please try reinstalling ir, or contact the product's vendor for an update
I'm gonna restart my computer but thought I should post those messages first.