T43 PWRMGRTR.DLL exception on BatteryMaximizer gauge refresh

[thinktwice]

Hi,

I installed the Battery Maximizer and Power Management Features Package (hereafter BMPMF) on a T43 2668-45G.

When the Windows XP desktop displays, the battery gauge displays correctly.

But when launching a program (e.g. Firefox), the battery level tries to resfresh and a popup error window displays, informing about some exception with PWRMGRTR.DLL.
The battery icon becomes white and displays "---" instead of a percentage.
After some minutes, the battery icon displays correctly again.

I checked that PWGMGRTR.DLL is present; in this case, it is located in P:\ThinkPad\Utilities.
I also tried reinstalling the BMPMF, but this does not solve anything.

Any idea what's going wrong?