Sounds like wine is incorrectly trying to access paths on the filesystem. It could be a wine bug, but I've never seen that issue before. The actual error isn't coming from SSL or mIRC, but a script trying to $read(options.txt). I doubt this is affecting the client from doing its own job-- it's probably just disabling a script. Unload the script and you won't see the error anymore.
Type the following in mIRC and report the results here:
//echo -a $version $os $md5($mircexe,2) $script(0) $com(0) $dll(0)