WanSync HA – 1450 Error

WanSync HA Version: 4.0.72
I’m replicating a Exchange 2003 Enterprise server from Server A to Server B with about 4 Storage Group and 16 mail stores, using block synchronisation.

I’m wondering if anyone has come across this error message before:

Unable to read data from file: X:/StorageGroup/Mailstore.edb (Insufficient system resources exist to complete the requested service.(1450))

Thanks in advance