After installing 8.2i sp3 and IP Update 2, you might receive the following error when trying to generate a PCI 32 or 64-bit Core or PCI-X Core:
"ERROR:Portability:74 - Port_Compress::UnCompress() : (Z_DATA_ERROR) input data was corrupted"
This problem has been fixed in a new revision of IP Update 2. This update is ISE IP Update 2, rev 3 or "ise_82i_ip_update2_3.zip". For information on obtaining and installing this fix, see (Xilinx Answer 23831).