This is a generic error that indicates that mIRC was unable to allocate the required memory to perform a certain function. As with any programming language, it is very easy to make mIRC display this error - all you have to do is to allocate huge numbers of hash tables or binary variables, load large numbers of bitmaps, and so on. At some point, when system resources have been used up, mIRC will return this error and you will probably start to see other applicatons behave strangely as well. You will need to review the scripts you are using to see where the memory is being allocated and whether your scripts are freeing it correctly when necessary.