Problem solved....
09/26/2016 08:48 20,034,086 DIR-890L_fw_revA_1-11b01_eu_multi.zip
11/10/2016 03:28 19,907,536 DIR-890L_fw_revA_1-11b01_eu_multi_20161110.zip
When using the latest file (20161110) it is totally impossible to use "mydilnk". Also lost connection with my PC last night. Had to reboot the router
Going back to the older file it all works like a charm.
Now only the time will tell about the durability of the system ;-)
Still don't like SC....Had to disable that....