d93f3174504f8a0c21aef6998714e3b67ba82606

 1diff --git a/oh-my-zsh.sh b/oh-my-zsh.sh
 2index 29d39ca23523cb0ad2b5031413de16b33dab8edb..e94c2f4172b9549339200100a0ca8fed93b88895 100644
 3--- a/oh-my-zsh.sh
 4+++ b/oh-my-zsh.sh
 5@@ -143,7 +143,10 @@ fi
 6 unset zcompdump_revision zcompdump_fpath zcompdump_refresh
 7 
 8 # zcompile the completion dump file if the .zwc is older or missing.
 9-zrecompile -q -p "$ZSH_COMPDUMP" && command rm -f "$ZSH_COMPDUMP.zwc.old"
10+if command mkdir "${ZSH_COMPDUMP}.lock" 2>/dev/null; then
11+  zrecompile -q -p "$ZSH_COMPDUMP"
12+  command rm -rf "$ZSH_COMPDUMP.zwc.old" "${ZSH_COMPDUMP}.lock" 
13+fi
14 
15 # Load all of the config files in ~/oh-my-zsh that end in .zsh
16 # TIP: Add files you don't want in git to .gitignore