Creating And Using Database On Storage Card

Hi all.

I develop a app on PPC 4.20 using SQLServer 3.1. I developed a o/r mapper whitch auto-creates the Database and Tables using attribute-decorated objects. That all works fine - as long as my Database is in \MyDocuments .
Trying to store the Database in \Storage Card\test.sdf, whitch is absolut neccessary because it will become to big for storing onto device, I get error 25113, "A not supportes operation to host was called" (Translated from German)

When I trie to copy a Database to the SD-Card, inserts are not commited.

Is it not supported to store Databasefiles on a Flashcard?

My development-environment is .net 2.0 sp2, device-emulator v2, Windows XP, vs2005. In the emulator, i have linked a windows-based directory as storagecard.

What am I doing wrong??



class SQLManager
{
private static SQLManager instance = null;

private SqlCeEngine m_cEngine = null;
private SqlCeConnection m_cConn = null;

private SQLManager()
{

m_cEngine = new SqlCeEngine(
"Data Source = \Storage Card\test.sdf");

bool bCreated = false;
if (!File.Exists("\Storage Card\test.sdf"))
{
bCreated = true;
m_cEngine.CreateDatabase();
}

m_cConn = new SqlCeConnection(
"Data Source = \Storage Card\test.sdf");
m_cConn.Open();

if (bCreated)
DoInitialDatabaseSetup();

}
....

}