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I know now what the error causes.
It's in the MP source code:

m_db = new SQLiteClient(@"database\TVDatabaseV9.db");

of method "static TVDatabase()"

[code] private TVDatabase()
{
}

/// <summary>
/// static constructor. Opens or creates the tv database from database\TVDatabaseV6.db
/// </summary>
static TVDatabase()
{
lock (typeof(TVDatabase))
{
try
{
// Open database
Log.Write("opening tvdatabase");
System.IO.Directory.CreateDirectory("database");
//Upgrade();
m_db = new SQLiteClient(@"database\TVDatabaseV9.db");
CreateTables();

if (m_db!=null)
{
m_db.Execute("PRAGMA cache_size=8192\n");
m_db.Execute("PRAGMA synchronous='OFF'\n");
m_db.Execute("PRAGMA count_changes='OFF'\n");
}

}
catch (Exception ex)
{
Log.Write("TVDatabase exception err:{0} stack:{1}", ex.Message,ex.StackTrace);
}
Log.Write("tvdatabase opened");
}
}[/code]

But I have no idea why?

<blockquote data-quote="STSC" data-source="post: 7112" data-attributes="member: 10535">I know now what the error causes.It's in the MP source code:m_db = new SQLiteClient(@&quot;database\TVDatabaseV9.db&quot;);of method &quot;static TVDatabase()&quot;[code]&nbsp; &nbsp; private TVDatabase()&nbsp; &nbsp; {&nbsp; &nbsp; }&nbsp; &nbsp; /// &lt;summary&gt;&nbsp; &nbsp; /// static constructor. Opens or creates the tv database from database\TVDatabaseV6.db&nbsp; &nbsp; /// &lt;/summary&gt;&nbsp; &nbsp; static TVDatabase()&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; lock (typeof(TVDatabase))&nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; try&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // Open database&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Log.Write(&quot;opening tvdatabase&quot;);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; System.IO.Directory.CreateDirectory(&quot;database&quot;);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //Upgrade();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; m_db = new SQLiteClient(@&quot;database\TVDatabaseV9.db&quot;);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; CreateTables();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (m_db!=null)&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; m_db.Execute(&quot;PRAGMA cache_size=8192\n&quot;);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; m_db.Execute(&quot;PRAGMA synchronous='OFF'\n&quot;);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; m_db.Execute(&quot;PRAGMA count_changes='OFF'\n&quot;);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; catch (Exception ex)&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Log.Write(&quot;TVDatabase exception err:{0} stack:{1}&quot;, ex.Message,ex.StackTrace);&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; Log.Write(&quot;tvdatabase opened&quot;);&nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; }[/code]But I have no idea why?</blockquote>

[QUOTE="STSC, post: 7112, member: 10535"] I know now what the error causes. It's in the MP source code: m_db = new SQLiteClient(@"database\TVDatabaseV9.db"); of method "static TVDatabase()" [code] private TVDatabase() { } /// <summary> /// static constructor. Opens or creates the tv database from database\TVDatabaseV6.db /// </summary> static TVDatabase() { lock (typeof(TVDatabase)) { try { // Open database Log.Write("opening tvdatabase"); System.IO.Directory.CreateDirectory("database"); //Upgrade(); m_db = new SQLiteClient(@"database\TVDatabaseV9.db"); CreateTables(); if (m_db!=null) { m_db.Execute("PRAGMA cache_size=8192\n"); m_db.Execute("PRAGMA synchronous='OFF'\n"); m_db.Execute("PRAGMA count_changes='OFF'\n"); } } catch (Exception ex) { Log.Write("TVDatabase exception err:{0} stack:{1}", ex.Message,ex.StackTrace); } Log.Write("tvdatabase opened"); } }[/code] But I have no idea why? [/QUOTE]