The merge process could not clean up the subscription

hi,

I made a merge replication and used a push subscription , i always got the following error:
Error messages:
The merge process could not clean up the subscription to 'RTSSRVSQL1':'RALADA:'RALADAAfterShrinkPub'. (Source: MSSQL_REPL, Error number: MSSQL_REPL-2147200965)
Get help: http://help/MSSQL_REPL-2147200965
Parameter 1 is incorrect for this DBCC statement. (Source: MSSQLServer, Error number: 2560)
Get help: http://help/2560
The merge process could not initialize the subscription. Ensure that the subscription registration exists at the publisher, and reregister the subscription if necessary. (Source: MSSQL_REPL, Error number: MSSQL_REPL-2147201011)
Get help: http://help/MSSQL_REPL-2147201011

and one more thing if i create pull subscription i got the status uninitialized subscription

Any help will appreciated

Thanks

Ahmad