Unable to create instance of class NBinjatrader.strategy.MicrotrendsMT3

[09:48:11] ash.jackson: When I now open my stratagies a box pops up which
says...

[09:51:55] ash.jackson: Unable to create instance of class
NBinjatrader.strategy.MicrotrendsMT3. Most likely there is no default
constructor defined, of the dafault constryuctor does not work
correctly:object reference not set to an instance of an object

[09:52:51] ash.jackson: Ive run my template.exe so whats wrong? Any ideas?

delete the following file:
\My Documents\NinjaTrader 7\templates\Strategy\MicroTrendsMT3.xml

To save your settings in a strategy right click on the parameters and click sve as default.