Arduino 1.6.9 / MKR1000 --> Board mkr1000 (platform samd, package) is unknown

Development Tools IDE 1.x
1

Hi

I am using IDE 1.6.9, SAMD 1.6.3 and Arduino MKR1000.

If I try to verify/combile the blink example sketch, I got a error message.
Any idea or suggestion? I am searching since 2 hours for a solution.....

Simon

ERROR :
Arduino: 1.6.9 Hourly Build 2016/03/24 06:33 (Windows 10), Board: "Arduino/Genuino MKR1000"
Board mkr1000 (platform samd, package arduino) is unknown
Error compiling for board Arduino/Genuino MKR1000.

2

SOLVED !!

I deleted all files in

C:\Users\USER\AppData\Local\Arduino15\packages\arduino\hardware\samd

directory and reinstalled only SAMD 1.6.3 in board manager.

Now it works fine!