custom action doesn't work, but work with command line

[Darong Liu]

I add a customer action to compare 2 commits with Beyond compare. it works in one PC with sourcetree version 2.5.5.0

Now I want to do same thing in my new PC with sourcetree version 2.6.10.0, The output is:

git difftool --dir-diff --tool=sourcetree 12a402ff418973ab64579a210f3b96fe446c1ca1 1e4888c75b58f4d7bc4d6fe3484426f40b99171f

Completed with errors, see above.

If I run same command in Terminal of sourcetree on this new PC, it works fine.

Compare single file with "External Diff" from GUI also works fine.