I bet you made new files in mspaint (or you selected "Copy" from ResHacker). The best way to modify the logos is to export the bitmaps from reshacker then edit them, which will preserve the depth and size of the bitmap.

I had the same problem as you (blank screen), then I realized that my new edited bitmaps had a depth of 24 bits, whereas the original ones were 4 bits (16 colors). After I corrected this, my new logos worked perfectly.

I changed, with me change also all possible files for however nothing at all. Does someone have new realizations which file now for it is really responsible!? The file size must be also equivalent, or only the dimension of picture area (thus the number of pixels).