A little while ago I discovered pg 0.1.6 had some issues with more recent GIT versions, such as GIT 1.4.1 due to some changes in command line parameter handling.
Consequently pg 0.1.7 is now available. Here is the shortlog of changes:
* When backing up into a new directory GIT 1.3.1 won't copy
* Corrected diff-index usage for GIT 1.4.1.
* Add raw diff support to pg-files.
* Add --base=foo option to pg-new.