I assume from your title that you are reviving an error about the "LTMsg.dll"
Here is the file it is asking for;
Scanned for safety;
LTMsg.rar - Jotti's malware scan
VirusTotal - Free Online Virus, Malware and URL Scanner
The file is clean but shows up as one negative report.
Please insert this into your Z8games Crossfire Folder.
If this still does not work, Please completely uninstall Crossfire Using CCleaner
CCleaner - Download
How to Use CCleaner to Uninstall Programs | eHow.com
Temporarily disable any Anti-virus you currently are running, and reinstall Crossfire from the Z8games Website;
Cross Fire - Free Online FPS - Cross Fire - Free Online FPS - Home
Good luck