iCloud "message size violation" when sending zip containing more than 127 files
I just ran into the same problem : zipped two 11.5 MB Xojo compiled apps. Sending from me.com or sending to me.com gave the 'message size violation' error. 

To bypass this possible 127-file limit, I created an empty disk image with Disk Utility. Mounted it and copied the two apps onto it. Unmounted and zipped it and sent it via me.com : that worked.