That second one sounds like the old mdec glitch. Make sure you have mdecs switched on in epsxecutor.
As for disk changing... you need to goto the change cd option in the file menu after you insert the disk for the emu to realise the disks are changed. But as you said you can access it by exiting the emu and restarting so it is not too big a prob in this case.
As for disk changing... you need to goto the change cd option in the file menu after you insert the disk for the emu to realise the disks are changed. But as you said you can access it by exiting the emu and restarting so it is not too big a prob in this case.