Hello,
So this was just a build upgrade and the version did not actually change?
If the halcust is not closing files correctly the system can run out of file descriptors.
File descriptors are pointers/handles to opened files in Linux, whenever you want to read/write to a file you first need to open it and then close it when you are done. The amount of files you can have open at once is limited (usually a pretty high number). But if you open a file and do not close it, it will just remain open. Do that enough times and you will run out of file descriptors and the program will crash.