Some people have an issue when the installer gets to the urls.ini file. This is installed at the end. mIRC can run perfectly well without it - read
this thread for further information.
You might try closing all other programs, including those that are in the tray, before installing mIRC, as other programs (particularly sensitive antiviruses/trojan scanners with auto-protect features on) may interfere with installation.
I personally have had no issues with the installer.
Edit: Ta da
![grin grin](/images/graemlins/mirc/grin.gif)
Regards,