Generation of ILA debug logic sometimes fails with the following error message:
ERROR: [Chipscope 16-133] Failed to generate and synthesize debug IP "xilinx.com:ip:ila:3.0".
ERROR: [Ipptcl 7-5] XIT evaluation error: Invalid file name: c:/Users/.../AppData/Local/Temp/u_ila_0_0_CV_2-8780/u_ila_0_0_CV.srcs/sources_1/ip/u_ila_0_0_CV/u_ila_0_0_CV_ooc.xdc
ERROR: [Common 17-39] 'xit::add_ipfile' failed due to earlier errors.
This is a known issue with the 2013.3 tools and will be fixed in future versions.
For now, it is possible to work around this error by setting one of the following environment variable tcl commands:
set ::env(TEMP) c:\\tempor
set_param chipscope.createIpInWinTemp 0