Weird problem with design attributes

[GeezerButler]

Hi,
I have a user control declared like:
public class MyUserControl: UserControl, INamingContainer
{
.....
}

I am applying design time attributes to some properties of my
UserControl.
For example:
[Category("Appearance"),
TypeConverter(typeof(StringArrayConverter))]
[Description("Some description")]
public string[] MyProperty1
{
.....
}

For some reason, the Category is being applied correctly to all
properties but i can't see the ArrayConverter or the description.

Has anyone faced this problem? Any help would be appreciated.