Problems (#1) - Pointers and fixed size buffers may only be used in an unsafe context(CS0214)] (#123) - Message List

I download the code of:

http://abstrakraft.org/cwiid/browser/trunk/csharp/MonoWii

I open it with monodevelop 1.0 and compile with mono 2.0.1 in Debian, but the I have some errors in CWiid.cs:

"Pointers and fixed size buffers may only be used in an unsafe context(CS0214)]"

Line 318, 346, 347, 353, ....

What is the problem??

Thx.