Total station data error in topcon.

I have a Topcon GTS 255 and I can download via Toplink 8.2.3 without issue and seems like I can alter the

connection settings from the standard baud 1200, 7 E, 1 to 9600, 8, N, 1  with either one way or ACK-NAK

and the file downloads.

Toplink can convert the file into a comma delimited (.txt) file.

In order to upload you have to convert that file to an .xyz through the conversion part of Toplink choosing the 

model range that includes the 255.

Am having uploading difficulties at present even when using the factory com settings for the RS-232 and data transfer

and laptop com port all at 12oo, 7, E, 1.

Any suggestions?