What the application does is import an MPO file from a Fuji stereo camera, separates the left and right frames and displays them in a window. You should them be able to make various adjustments and output a stereo card image. This works well in the development environment, but it falls over completely when the application is exported as a standalone.
Here’s the problem. This is the screen after I load an MPO file in the development environment (ie running LiveCode):

The application allows me to increase the size of the two images, so I do this using a slider in the inspector palette. I get this in LiveCode:

Now, compare the screens with those in the standalone app. There has been no changes to the code between these two states.
Straight after loading:

And then after the images are scaled:

Something is not right here - but I’m not sure what - hence me posting this. The image size appears to be unchanged compared to the “good” result. It has done *something* because the inner shadow has appeared (during the scaling effects etc. are dropped help speed things up a bit). That tells me that it's processed the image, but maybe the weird appearance is something to do with the container not scaling?
I’m wondering what it is that I should be looking to solve this problem, and how to debug the standalone fully, as obviously there are problems there which need addressing. The headache is that this (and a couple of other performance issues) are not consistent between what LiveCode shows (which is how I expect it to work) and what the standalone is doing (it not what I expect). So to debug, I have to build, test, fix, build again. This is in LC Community 8.0.0, and also noted similar problems in 7.1.4 on Mac OSX 10.11.4
I’ve already addressed a few problems which seem to stem from using code along the lines of "put text of image A into image B" instead of using imagedata - but again, why should that be an issue in the standalone when it works correctly in the LiveCode development environment?
There also seem to be other performance issues which adversely affect the standalone as opposed to the LiveCode preview, and a few other problems with importing other image formats (such as TIFFs) which, again, are a problem in the standalone but not in the development environment.
Somewhat baffled by this at the moment. I’ll keep looking myself, but I’m hooping that someone has seen this kind of thing before and can point me in the right direction.