Teensy 3.1 problems with WS2801

Dear Arduino Community,

since a few days, i changed from a Teensy 3.0 to a Teensy 3.1. Both are wired directly with a WS2801 (Data and Clock Pin(11/13) !) LED Matrix (50 LEDs).

When I now want to use the "old" Teensy 3.0 code with the new Teensy 3.1 I get the following erroe messages:

In file included from C:\Program Files (x86)\Arduino\libraries\FastSPI_LED21/fastspi.h:6:0,
from C:\Program Files (x86)\Arduino\libraries\FastSPI_LED21/FastSPI_LED2.h:6,
from sk_FastSPI2FXv051_POST.ino:41:
C:\Program Files (x86)\Arduino\libraries\FastSPI_LED21/delay.h: In function 'void _delaycycles_AVR() [with int LOOP = 15; int PAD = 2]':
C:\Program Files (x86)\Arduino\libraries\FastSPI_LED21/delay.h:36:4: error: unknown register name 'r16' in 'asm'

This errors also appears, when I want to text the examples of the FastSpi_Led2, FastSpi_Led and FastLed libraries. Would be perfect if someone could help!

Thank you very much!

You should post this on the Teensy forum.