bug: "fatal: cannot pread pack file", version 1.7.5.4

Hi,

I have used git for some time and regularly pushed changes to another server (as some kind of backup), but today I got this error during `git push`:

Counting objects: 1293, done.
Compressing objects: 100% (1027/1027), done.
Writing objects: 100% (1229/1229), 70.83 MiB | 364 KiB/s, done.
Total 1229 (delta 343), reused 0 (delta 0)
fatal: cannot pread pack file: No such file or directory
error: unpack failed: index-pack abnormal exit
To user@host:~/path/
 ! [remote rejected] master -> master (n/a (unpacker error))
error: failed to push some refs to 'user@host:~/path/'

I found similar bug reports suggesting to upgrade too version 1.7.x, but I am already using git version 1.7.5.4. Can somebody explain to me what this error is about? What can I do to resolve it / is there a workaround?

(There is enough disk space on the other server.)

Lars