ATE 5.1/5.2 can be run in parallel with ATE 5.0, as they have separate COM and other Registry identifiers. Note however, that this also means that any COM XCALLs, such as FTPDLXCALL.DLL, are specific to 5.1/5.2 or to 5.0 (and thus must be stored in the default local BIN subdirectory of each installation, rather than in a common Windows directory).

If you have created your own COM XCALLs, please contact MicroSabio for details on upgrading them from 5.0.