Raspberry Pi, qt GUI creator executable

Created a GUI on Raspbian using qtcreator. The program runs in the qt creator, but the executable does not run (i.e. tries to run it from qt). Interestingly, the same executable is running on a different raspberry pi.

Both Pi have a creator qt, same versions, etc. When you hit run in qt creator, the program works fine. Note that the second Pi (the one with the problem) is Pi 2 and the original is the previous model.

Interestingly, the size of the former is about 1.4 MB, and the total file size is 175.2 kb. However the second one is 175.2kb for both.