>> I download demo version of MPLAB-C17 from Microchip web site and install it.
>> But I can not to try this version. I get this message:
>><snip>
>> Demo stamp not found..
>>
>> What is a "demo stamp"?

>A new version was posted.  The error message is related to the timer that
>times out after 30 days on this demo version.  Apologies to those who were
>inconvenienced by this.

I download and install MPLAB-C17 demo at one day.
I get message about "Demo stamp" not after 30 days but after 30 seconds.
This is by design?

Michail