Yesterday I installed OSX 10.9 Mavericks on my MacBook Pro. After the update I could not use MacVim anymore 
The MacVim App would start (the icon appears in the dock), but I was not able to open any windows. If I tried to start MacVim from console I got this error message:
dyld: Library not loaded: /System/Library/Perl/lib/5.10/libperl.dylib<br />
Referenced from: /Applications/MacVim.app/Contents/MacOS/Vim<br />
Reason: image not found<br />
Trace/BPT trap: 5<br />
Unfortunately https://code.google.com/p/macvim/ does not provide any official MacVim-for-Mavericks builds yet. Update: Not linked on the MacVim home page yet, but Snapshot 72 is compiled for Mavericks. Get it here.
The good news are: MacVim is open source. So I went out, got the code, compiled the whole thing on my Mac, and voila: 
You can download this build here. No warranties. No support. An offical build is available now: https://github.com/b4winckler/macvim/releases/download/snapshot-72/MacVim-snapshot-72-Mavericks.tbz