erro ao rodar aplicação fora do D4PHP

Boa Tarde,
estou desenvolvendo uma aplicação com D4PHP e quando ele carrega a pagina que verifica se possiu alguma sessação gravada pra direcionar para a pagina de login se nao tiver da o seguinte erro...

Warning: unserialize() expects parameter 1 to be string, array given in D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\dbtables.inc.php on line 1017

Warning: unserialize() expects parameter 1 to be string, array given in D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\dbtables.inc.php on line 1017

Warning: unserialize() expects parameter 1 to be string, array given in D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\dbtables.inc.php on line 1017

Warning: unserialize() expects parameter 1 to be string, array given in D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\dbtables.inc.php on line 1017

Warning: unserialize() expects parameter 1 to be string, array given in D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\dbtables.inc.php on line 1017

Warning: unserialize() expects parameter 1 to be string, array given in D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\dbtables.inc.php on line 1017

Application raised an exception class EDatabaseError with message ´Cannot connect to database server´
Callstack #0 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\index.php Line: 5
|_Callstack 1 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\dados.php Line: 34
|_Callstack 2 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\classes.inc.php Line: 1213
|_Callstack 3 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\classes.inc.php Line: 1243
|_Callstack #4 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\classes.inc.php Line: 489
|_Callstack 5 File: Line:
|_Callstack 6 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\classes.inc.php Line: 415
|_Callstack 7 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\classes.inc.php Line: 846
|_Callstack 8 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\db.inc.php Line: 179
|_Callstack 9 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\system.inc.php Line: 190
|_Callstack 10 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\dbtables.inc.php Line: 122
|_Callstack #11 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\db.inc.php Line: 201
|_Callstack 12 File: D:\Arquivos de programas\Apache Software Foundation\Apache2.2\htdocs\mascote2\vcl\dbtables.inc.php Line: 211

no D4PHP funciona tudo normal e o apache que to usando é o 2.2 com php 5.2.5
alguem saberia me ajudar...
desde ja Obrigado