Homemade activity not showing up?

[lukescool]

I made an activity for Simvliet 2020 called Evening Extra following the guide from the wiki.
I then put it in Program Files > Metro Simulator > Data > Simvliet 2020 > Activites and it is an .act file as the rest.

But when I launch Metro Simulator it doesn't show up??

Please help me

[Sjoerd]

You probably made an error somewhere in the XML coding of the activity. If that is the case, it won't show up when you start Metrosimulator.