ComponentActivatorException

This has caught me out a couple of times now. I was getting this exception:

Castle.MicroKernel.ComponentActivator.ComponentActivatorException: ComponentActivator: could not instantiate MyNameSpace.ClassName ---> System.ArgumentNullException: Value cannot be null.
Parameter name: types
at System.Type.GetConstructor(BindingFlags bindingAttr, Binder binder, Type[] types, ParameterModifier[] modifiers)
at Castle.MicroKernel.ComponentActivator.DefaultComponentActivator.FastCreateInstance(Type implType, Object[] arguments, Type[] s

The exception could be a bit more informative - it turns out this is caused by not providing a public constructor on the class (it was accidentally set to ‘protected’).

RAA Rounding Error

I went to renew our RAA membership this morning. The paper bill said we owe $170.

I went to the web site to pay online, but was greeted by this:

TOTAL (including GST) $170.01

Yes, they’re overcharging me by 1c.

I rang them up to let them know (and also paid the correct amount while I was at it).

Could this be salami slicing, or more likely someone’s made a silly rounding error. Can’t those IT people ever get it right?

:-)

A furry visitor

“I’m sure there was a tree around here last time”