The data you transfer from cbttape.org is
always a zip file: xxx.zip.
After you have received the file from cbttape.org
you must extract the files in the ZIP file either through Windoze or through a file extract program like winzip. There is usually just 1 file in the ZIP file. The file name is usually FILEnnn.XMI.
You must then send this file to your z/OS system as a
"binary" file. It's usually best to send the file to a preallocated data set with DCB attributes
RECFM=FB, LRECL=80, BLKSIZE= some multiple of 80.
You must extract the the PDS in this data set using the TSO RECEIVE command:
RECEIVE INDATASET(xxx) where xxx is the file name you assigned to the data set when you sent it to the mainframe.
The RECEIVE command prompts you for the name of the PDS. The default name is usually pretty junky for your purposes, though it is perfectly OK. You do not have to pre allocate this data set.
See
this page for more ideas.
The messages you show seem to indicate the transfer to the mainframe was not binary.