Aside from the error codes listed in this section, the FTPDLX.SBR also writes a human readable log file, FTPDLX.LOG in the current directory, which may identify discrepancies between what you thought you were asking it to do and what it was actually trying to do. In addition, if the environment variable ASHFTPDEBUG is defined, a more detailed, lower-level log will written to %TEMP%\ftpdebug.log (or, prior to A-Shell 5.1.1153 of June 2009, c:\debug.log).
The two DLLs mentioned early must be recorded in the Windows Registry, and this process will normally be taken care of automatically by the A-Shell installation program. However, if FTPDLX doesn't work even if the DLLs and the ALIAS statement are in place, you may need to manually register to the two DLLs:
Start..Run..REGSVR32 <bin-path>\WODFTPDLX.DLL
Start..Run..REGSVR32 <bin-path>\FTPDLXCALL.DLL
