File list (Check if you may need any files):
led
...\.lso
...\device_usage_statistics.html
...\LED.ipf
...\LED.ise
...\LED.ise_ISE_Backup
...\LED.ntrc_log
...\LED.restore
...\light_key.bgn
...\light_key.bit
...\light_key.bld
...\light_key.cmd_log
...\light_key.drc
...\light_key.lfp
...\light_key.lso
...\light_key.ncd
...\light_key.ngc
...\light_key.ngd
...\light_key.ngr
...\light_key.pad
...\light_key.par
...\light_key.pcf
...\light_key.prj
...\light_key.stx
...\light_key.syr
...\light_key.twr
...\light_key.twx
...\light_key.ucf
...\light_key.unroutes
...\light_key.ut
...\light_key.v
...\light_key.xpi
...\light_key.xst
...\light_key_guide.ncd
...\light_key_map.map
...\light_key_map.mrp
...\light_key_map.ncd
...\light_key_map.ngm
...\light_key_pad.csv
...\light_key_pad.txt
...\light_key_prev_built.ngd
...\light_key_summary.html
...\light_key_summary.xml
...\light_key_usage.xml
...\xst
...\...\dump.xst
...\...\........\light_key.prj
...\...\........\.............\ngx
...\...\........\.............\...\notopt
...\...\........\.............\...\opt
...\...\........\.............\ntrc.scr
...\...\projnav.tmp
...\...\work
...\...\....\hdllib.ref
...\...\....\vlg04
...\...\....\.....\light__key.bin
...\_impact.cmd
...\_impact.log
...\_ngo
...\....\netlist.lst
...\_xmsgs
...\......\bitgen.xmsgs
...\......\map.xmsgs
...\......\ngdbuild.xmsgs
...\......\par.xmsgs
...\......\trce.xmsgs
...\......\xst.xmsgs