I was able to open both files using CX-Programmer version 3.2 and CX-Server version 1.7. However, there are many rung comments that appear garbled, same as in Sergei's PDF 9.4 version (probably because they were originallly in a foreign language).
I will save them as a version 3.2 file, then you might be able to open them (but it seems unlikely). Can you open any other known-good file?