Hello,

I have installed the dotnetnuke source 4.4.1 and i begun my firt module developpement whit 4.4.1 but the problem is that when i click on th link update the fallawing error appears :

Error: is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at YourCompany.Modules.ProductCategory.ProductCategoryController.AddProductCategory(ProductCategoryInfo objProductCategory) at YourCompany.Modules.ProductCategory.EditProductCategory.cmdUpdate_Click(Object sender, EventArgs e) --- End of inner exception stack trace ---

Please help me to solve this problem,it's really a big problem for me

That's a good catch. I originally looked at that and couldn't begin to determine what was wrong. (note: when you go to Admin/Log Viewer you can see all the errors returned).

It appears:

• EditProductCategory.cmdUpdate_Click is suppose to pass "ProductCategoryInfo" to "AddProductCategory".
• The error is in "AddProductCategory".
• Is it because one of the fields in "ProductCategoryInfo" is null or the entire object "ProductCategoryInfo" is null?