I tested the functionality of -c2 switch and it appears to be working correctly.
Are you using the latest version/build of FlashFXP from our website? Currently 5.4.0 (build 3939), if not update first and see if its fixed, but if not
Try this modified command line
Code:
flashfxp.exe -download "ftp://user:pw@siteip" -remotepath="/_test/" -localpath="D:\SaveTo\" -c2 -logpath="D:\SaveTo\" -logopt=10000000
It will create a session.log file in D:\saveTo\session\<date\time>\
Then open the session.log in notepad and see if there are any errors reported