If you're using 64-bit Linux server, you need to create a symbolic link from StandardERPServer64-Slave to StandardERPServer-Slave, otherwise it doesn't work. This is a bug I reported many years ago.
I would like to know what BackgroundHALShouldPause does, and how to use it. While it's listed in the HAL Primitives report, it is not used in source code and it doesn't appear in the LMS HAL...