Hi Darrel,
yes you are right, i had 8.56, now 8.66 and it works.

BTW: For all I2C Slave progger:
To get the I2C Slave running on a 25K22, use SSP1_INT or SSP2_Int, and, very important, you must set ANSC4 & ANSC3 = 0 for SSP1 and ANSB1 & ANSB0 = 0.

Regards,
Ralf