ERROR - The specified data type is not valid. [ Data type (if known) = varchar ]

I have recently installed SQL 2008 R2

CREATE TABLE TPERSONS(
personid int PRIMARY KEY NOT NULL,
lastname varchar(50) NULL,
firstname varchar(50) NULL,
salary money NULL,
managerid int NULL -- foreign key to personid
)

I do not understand why I receive this error.

Major Error 0x80040E14, Minor Error 26302

)
The specified data type is not valid. [ Data type (if known) = varchar ]

The data type varchar is not one of the supported data types on SQL Server CE. You must use nvarchar.

Note that date is not supported, either. Use datetime instead.