When having trouble checking out files in Workbench, sometimes it helps to use the "hco" command line utility so that extra network tracing can be added to the log file. But, all the options in the "hco" command can be confusing. How can the command be built using the information you see in Workbench?
Release : 13.0.3
So, you could start with this example and fill in the details:
hco -b <brokername> -en <project name> -st <state name> -up -op pc -p "<package name>" -vp "<the From: field>" -cp "<the To: field>" -r -s "*" -tr -prompt
The log file will be named “hco.log” and is in your current working directory. If you could send me that log it will give us more details.