[cvsnt] error-message on commit

[Wolfgang Reder]

hello !

i have created a repository: ok
i have imported an existing project: ok
i checked it out: ok
i modified a file and did update on that file: ok
but when i try a commit i receive this message
Checking in ArticleClassHome.java;
/msdng/ArticleMasterData/src/at/mountainsd/masterdata/article/ArticleClassHome.java,v 
<--  ArticleClassHome.java
new revision: 1.2; previous revision: 1.1
cvs [server aborted]: cannot rename file 
/msdng/ArticleMasterData/src/at/mountainsd/masterdata/article/,ArticleClassHome.java, 
to 
/msdng/ArticleMasterData/src/at/mountainsd/masterdata/article/,ArticleClassHome.java,: 
File exists

whats the reason for this message ?
server: windows2000 with cvsnt 2.0.58b (ntfs)
client: linux
connection: ssh

thank you
wolfgang