PushOK Not Updating CVS

We are using Visual Studio .NET 2003, CVSNT 2.058d and PushOK
2.0.RC1_050211 and our operating system is Windows 2003 Standard Edition.

When checking a file in through VS.NET to CVS via PushOK, files are not
always committed to CVS. Instead they are made readonly, a padlock icon
appears beside the file through Windows Explorer and CVS says the file is
masked. To commit the file to CVS we need to make the file read/write and
then use Tortoise CVS to commit the file.

When PushOK does check the file backin successfully, the project file has
not been updated meaning other developers have to add the files to the
project before being able to build.

Are we missing some configuration setting of Push OK?