Verify the logical file names are what you expect them to be.
USE <your_db_name>
EXEC sp_helpfile
--Or: EXEC <your_db_name>.dbo.sp_helpfile
The first column will show the logical file name, which, of course, must match what you put in the SHRINKFILE command.
SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".