Try to disable your anti-virus software maybe your anti-virus block the mIRC for some reasons.
Also please copy/paste to your mIRC this line and press enter and reply here the results:
//echo -a $os $version $iif($beta,$beta,0) $md5($mircexe,2) $file($mircexe).sig $alias(0) $script(0) $dll(0) $com(0)
NOTE: Also have a look
here and into this forum maybe you will find an way to solve your problem.
- Thanks!