Hi, all: I have a very weird thing happening here. We are working on our custom GeneChip and I am trying to build our own cdf package and probe package. While I was working on a slightly better computer which belongs to our Bioinformatics department, everything worked fine and I have successfully built those two packages, no a problem. However, to make things more convenient to myself, I also tried to build the same packages in my own computer, the picture started to change. I have built the cdf package, not a problem, but when I tried to build the probe package, I got the error message said: "Error in library("disdiv712acdf") : 'disdiv712acdf' is not a valid package -- installed < 2.0.0?" disdiv712acdf is the cdf package I just built under R 2.0.1. To give you a bit more detail about the system I used: I am using R 2.0.1, I installed BioConductor package 1.5 using the getBioC() which, I believe was recommended, and my windows operating system is Microsoft windows 2000. Can anybody help me to solve this mystery? Thanks a lot! wenqiong ---------------------------------------------------------------------- -------- This email message and any attachments are confidential and ...{{dropped}}