Hi, Could someone explain how to fix Free-busy using this patch or how to get the newestkdepimlibs? This bug is known as bug 2862 (and fixed): https://issues.kolab.org/show_bug.cgi?id=2862 But it is only fixed in master libcaledering. The other way is to use the mewest kdepimlibs 4.13.2. Thanks, Josh