Problems writing bash script to unzip files

I'm getting the following errors when I try to write a script to unzip some zip files. When I use the free trial copy of the commerical winzip program, however, they work fine. When I use -l or -t on unzip it indicates no errors. When I use the -o switch interactively from the bash command line it works fine. These errors only occur from the bash script.

Can someone tell me what I am doing wrong (besides using windows)?
Siegfried

unzip OCAP1-EVAL-8300HD.zip .
Archive: OCAP1-EVAL-8300HD.zip
caution: filename not matched: .
unzip OCAP1-FS.zip .
Archive: OCAP1-FS.zip
caution: filename not matched: .
unzip OCAP1-QA.zip .
Archive: OCAP1-QA.zip
caution: filename not matched: .
unzip QA-3rdParty.zip .
Archive: QA-3rdParty.zip
caution: filename not matched: .

Why do you have periods at the end of each zip line? It's tried to unzip '.' which is giving you the error.

Carl