Major Queue bug in latest 1.5.988.20 (even dev. edition)

On file upload (no problem):

257 "/e:/upload/Mopho Project" is current directory.
SIZE Mopho v0.472.14 (June 18th 2005).iso
213 341630976
PROT P
200 PROT command OK. Using private data connection.
PASV
227 Entering Passive Mode (x,x,x,x,78,75)
Opening data connection to x.x.x.x Port: 20043
REST 341630976
Connected. Exchanging encryption keys...
350 Restarting at 341630976. Send STORE or RETRIEVE.
STOR Mopho v0.472.14 (June 18th 2005).iso
150 Opening BINARY mode data connection for Mopho v0.472.14 (June 18th 2005).iso.
Session Cipher: 128 bit RC4
TLS encrypted session established.

On file download (broken):

257 "/e:/DRIVE D/SDK/Mopho Project" is current directory.
SIZE
501 Syntax error in parameters or arguments.
PROT P
200 PROT command OK. Using private data connection.
PASV
227 Entering Passive Mode (x,x,x,x,78,76)
Opening data connection to x.x.x.x Port: 20044
REST 10608640
Connected. Exchanging encryption keys...
350 Restarting at 10608640. Send STORE or RETRIEVE.
RETR
501 Syntax error in parameters or arguments.

As you can see from the two 501 error codes, the filename isn't parsed anymore. Server uses Serv-U FTP software.

Please give exact instructions how to reproduce it.

How did you add it to the Global Queue? With Copy&Paste?

Thank you.
Regards,
-Mat

Never mind, the issue was on an existing queue I had when I upgraded the software. On new queue items it works.

Old version was v1.0.985.6, so I guess the queue format got changed.