pvcreate cannot determine block size

[John Jimenez]

EMC sent me something called a Primus solution "emc114815"

under fix is says to do the following:

Take note of any special configurations to PowerPath (ie. load balancing policy, standby mode, etc...)
Remove /etc/powermt.custom (and any copys of that file i.e. powermt.custom.0, powermt.custom.bck)
reboot the host
Run powermt save

I have never removed the /etc/powrmt.custom file before. I am trying to get some answers on if there might be some issues if I remove the powermt.custom files.