Can't Change Buffer Size

Hi All,

New to the forums and need help.  Running Netbackup 7.5.0.6 on an HP DL380 G8, dual 8 Core Processors with 24 GB memory.  Attached is an HP MSL2024 G3 library with two Ultrium 3000 LTO 5 drives from HP as well.

Trying to perform all the tweaks and tuning, but when we try to change the SIZE_DATA_BUFFERS file to anything over 64k, we get an error:

HP Says its an issue with NetBackup.  Has anyone else seen this issue?