After the El Capitan install (10.11.1) was done on a newly formated external Hard Disk, I installed Xojo 2015r1, load a project and compiled it.
Then I compared the size of the two compiled applications (same project) on OS X and discovered that I have a small difference in the application foot print: a bit more than 100 bytes.
I checked the project modification date and the oldes stand alone and that stand alone is a bit older than the project (by some minutes): this is not the cause of the size difference between the two stand alones
Clue(s) ?