BandMathX and bands()
The use of operator bands produces a segfault in bandmathX application. This is a bit too harsh, maybe we can find a way to warn the user instead of crashing.
Steps to reproduce
Run BandMathX application (gui and maybe cli) try to use the operator bands on your image and set a non existing band. (For instance im1 has 3 bands try to do
OTB 6.7 binaries packages on linux 16.04