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Urgent ! InteropServices.COMException error Messages   Related Types This message was discovered on ASPFriends.com 'aspngmigrate' list. Responses highlighted in red are from those people who are likely to be able to contribute good, authoratitive information to this discussion. They include Microsoft employees, MVP's and others who IMHO contribute well to these kinds of discussions. Koh Yuen Lin, App Spec, SCS-MACH30 Hi, I'm using VB.Net Released version. I like to call a VB6 COM from a Web Application. I've Added Reference to my application. However, when it's trying to call a function in VB6 COM, it will give me the following error System.Runtime.InteropServices.COMException: Object variable or With block variable not set What does this mean? I've tried tlbimp but it i still get the same error message Pls advise. Thanks YL Reply to this message...        G. Andrew Duthie (VIP) This is a common COM error which usually indicates that you've declared an object variable, but not instantiated it before making a method call or referencing a property. Can you post the code that you're using to call the VB6 COM object? That might help us determine if there's a problem with the code.=20 The other thing to check in the meantime is whether the VB6 COM object is properly registered. Can you call the COM object from VB6? Finally, have you created a Runtime-callable wrapper (RCW) class for the COM object by running tlbimp.exe against it? Regards, -- G. Andrew Duthie Graymad Enterprises, Inc. http://www.graymad.com Click here to reveal e-mail address Author, ASP.NET Step By Step http://www.amazon.com/exec/obidos/ASIN/0735612870/ [Original message clipped] Reply to this message...        Martin Brock Hi, I'm using VB.Net Released version. I like to call a VB6 COM from a Web Application. I've Added Reference to my application. However, when it's trying to call a function in VB6 COM, it will give me the following error System.Runtime.InteropServices.COMException: Object variable or With block variable not set What does this mean? I've tried tlbimp but it i still get the same error message Pls advise. Thanks YL Reply to this message...     System.Runtime.InteropServices.COMException Ad MBR BootFX Best-of-breed application framework for .NET projects, developed by Matthew Baxter-Reynolds and MBR IT

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