There is no need to de-activate Filemaker 10... just un-install and re-install.
In fact, there is no option to de-activate it anyway.. The documentation with FM10 was not updated to reflect this.
You are incorrect. There is no activation limit associated with FM 10. I don't know why, but it doesn't exist.
I stand corrected and have deleted my message containing the erroneous statements.
Miltomatic, please accept my apologies for any inconvenience or delay this may have caused you.