I found the typo in Compare.cpp and fixed it.
Old...
V
185. ::MessageBox(nppData._nppHandle,TEXT("Can't locate SVN information"),TEXT("File Not Fount"),MB_OK);
New...
185. ::MessageBox(nppData._nppHandle,TEXT("Can't locate SVN information"),TEXT("File Not Found"),MB_OK);
Contained typo at line 185.
This was my first attempt at a patch ever. I forgot to submit the file as something else besides a .cpp file. Check Patch ID: 2800381 for a Compare.patch file.