The template "crashsig" does not exist or has no approved revision. _PR_MD_SEND
If your Firefox crashes with the crash signature _PR_MD_SEND, your computer is likely being affected by malicious software. For steps to take to resolve problems with malware and Firefox, see Troubleshoot Firefox issues caused by malware.
For troubleshooting other types of Firefox crashes, see Troubleshoot Firefox crashes (closing or quitting unexpectedly).