I have seen that under some circumstances the ISearchable implementation in the DNNPortal-Download module creates a lot of exceptions.

The problem is as follows:

The following line in the methos ISearchable did not work nder all cisumstances, I don't no why, but I have tested the alternative solution and it will work.

Here the original line in version 1.00.13:

userInfo = userController.GetUserByUsername(ModInfo.PortalID,objDownload.CreatedByUser);

You can replace this line of code with the following:

userInfo = (UserInfo)CBO.FillObject(DotNetNuke.Data.DataProvider.Instance().GetUserByUsername(ModInfo.PortalID,objDownload.CreatedByUser),typeof(UserInfo));

I have allready fixed that problem for the next version.

If you don't like make the change by yourself, you can download the attached dll patch for that issues.

Download the file, unzip and copy it to the bin folder to your DotNetNuke application.