Question: This website wants to run the following add-on: Adobe Flash Player from ...

why would i be getting this if i am not running any flash on my page?? thanks

Answer: 
So this is caused when you have two namespaces that contain Types with the same name within a single piece of code.

So this section

```
using Stream = System.IO.MemoryStream;
LoadImageFromDB(int ID, ref Stream streamReturnVal);

```

should explicitly define what kind of `Stream` is being passed.

It should probably look something like this

```
using Stream = System.IO.MemoryStream;
LoadImageFromDB(int ID, ref System.IO.Stream streamReturnVal);

```
Do you have using WebReference? That may create a problem.