Code:
10 7.51 4ff476850c039dc0ab0ae5c89057cfea ok 1 24 0 0

In your other post, it looks like you have 24 scripts loaded. Is this still the case? If it is, the cause could be any one of those scripts. The only way to be sure is to unload all scripts and then load them in one by one over time until you find one that causes the issue.

If you believe that the scripts are not causing the issue, you will need to confirm this by unloading all scripts and running mIRC to see if the issue still appears. This is the only way that we can narrow down the cause of the issue.