Problem:

Using Realflo v6.91.5 software, Realflo can read the configuration from the controller without any warnings but it is unable to save the file.
It comes back with the following error messages:
Unable to write to file "C:users\owner\my documents\realflo\realflo_test.tfv'

and:
Unable to write to file "C:users\owner\my documents\realflo\realflo_test.tfx'
Status
code=0x800004003
code meaning = invalid pointer
source=(null)
description=(null)

Fix:

Reinstall MSXML4.DLL file.
After the driver install, un-install Realflo software. restart PC and re-install Realflo. Read the configuration from the controller and save the configuration.

Released for: Schneider Electric Hong Kong