OS 5.0 - IIS 7.5 - HTTP Error 500 - While trying to open Service Center

I'm trying to setup a dev/test environment of an older Outsystems platform version which I need to do do some changes before migrate to version 6.0, but after all configurations done, when I try to open Service Center an error message of type HTTP Error 500 is showed.
Below follow all system and error informations:
Windows edition: Windows 7 Enterprise - Service Pack 1
System type: 32-bit Operationg system
Internet Information Services 7.5
Agile Platform

Detailed Error Information
HTTP Error 500- Internal Server Error
The page cannot be displayed because an internal server error has occurred.
ModuleName    IsapiModule 
Notification  128 
HttpStatus    500 
HttpReason    Internal Server Error 
HttpSubStatus 0 
ErrorCode     0 
ErrorCode     The operation completed successfully. (0x0)
Notification ExecuteRequestHandler
Handler AboMapperCustom-83853
Error Code 0x80070003
Requested URL http://localhost:80/ServiceCenter/
Physical Path C:\Program Files\OutSystems\Platform Server\running\ServiceCenter.0667723524\

In attachment I send a complete error trace, I've been trying to resolve this problem in last few days but without any success.

With original windows XP environment and IIS 5, I never had those problems, is it possible this problem is due to old Outsystems versions didn't work in Windows 7 and IIS 7.5 environment?

Thanks for your help.
Hi Miguel,

I think you are hitting on a problem related with Windows 7 Sp1 + IIS7.5 + .net 4.0

Check this post from Acácio on how to fix it on your system: http://www.outsystems.com/NetworkForums/ViewTopic.aspx?TopicId=7204&Topic=Server-2008-R2---Service-Pack-1-problem#Post21599

Also, that issue is fixed in the OutSystems Platform 6.0+ versions.

João Rosado
Hi João,

Thank you very much! After reading and implementing workaround proposed by Acácio, the problem was finally resolved.

Best Regards,

Miguel Pereira