TGitCache keeps crashing when I look at my folders or commit

By lanny.... on July 22, 2014 18:33 (imported from Google Code)

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What steps will reproduce the problem?

1. Clicking in my Git repo directory.
2. Or when I try to commit.

What is the expected output? What do you see instead?

1. Clicking in my Git repo directory, I expect to just look at my file. But I see a screen flashing by saying "TGitCache64 has crashed". Then a crash server web page pops out says "Report uploaded". Report information says:
   Report information
   Manufacturer TortoiseGit
   Application name TortoiseGit
   Application version 1.8.9.0
   Problem state New
   Problem 77134
   Dump group 174864
   Dump 2244950
2. When I commit, I get a message saying: "fatal: Out of memory? mmap failed: No error"

What version of TortoiseGit and msysgit are you using? On
what operating system?
I am using TortoiseGit 1.8.9.0 (64bit) and 1.9.4.msysgit.

Please provide any additional information below.
I have some large files in my folders. But they are not added to the repo. The largest file in the repo is only like 158MB.