Hey, I’ve found the problem, well at least for know. I’ve removed any sandboxing and that has done the trick. I’ll not be distributing thru the App Store so this is not needed. It would be nice to sort the sandboxing at some point tho’.
This is the codesigning –
codesign -s “Developer ID Application: xxxx xxxx (xxxx)” –options runtime –timestamp –force –entitlements /Volumes/HD/Applications/entitlements.plist