HSFX 5.0 was released about a year ago, and obviously won't be compatible with 4.11 released yesterday. We haven't been caught off guard by 4.11, it has to be released, and then it has to be patched if necessary, (And now it will be, due to an error in an AI routine.).
Only when that has been done and 4.11 appears to be a stable and will not be patched further, will HSFX 6.0, with support for 4.11 be released.
If you have already loaded 4.11 into HSFX 5.0, it won't work. We have no idea what will happen as we have never tried to do this.