FirewallBuilder

Policy compiler stops with an error ios_base::failbit set on Windows

It looks something like this:

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fwb_ipfw -f C:/Documents and Settings/User/data.fwb -d C:/Documents
and Settings/User -r C:\FWBuilder\resources fw

 Compiling policy for fw ...
  Detecting rule shadowing
 Begin processing
 Policy compiled successfully 
ios_base::failbit set
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First of all, check available free disk space. Also check if the output file ( fw.fw ) is opened in another program while compiler is running. That is, if you looked at it after the previous compiler run and opened it in Notepad, it becomes locked and compiler won't be able to overwrite it with the new copy until you close Notepad.