Wow Ranger Fox,
thanks a lot for figuring out and teaching me a language lesson
I went through my cartridge and took off all "package" words from everywhere, just to be sure. Because it seems it is not the word "package" that let's the compiler fail but rather "package." I saw that even in the description of the item chewing gum I used the word package, but not at the end of the sentence. The dot in the end seems to remind the compiler of an object orientated construction. I tried it out too. If you put any other word, except package , behing the package in these 4 message boxes it works too.
So thank you again Ranger Fox for all the time spent and for your help. If you ever visit Munich, you could try out the Wherigo yourself