md_clue map error

[3RB]

when i change the map from cs_office to md_clue it shows this error

[ERROR] addons/utime/lua/autorun/cl_utime.lua:144: attempt to call method 'IsValid' (a nil value)
  1. unknown - addons/utime/lua/autorun/cl_utime.lua:144


[ERROR] addons/utime/lua/autorun/cl_utime.lua:144: attempt to call method 'IsValid' (a nil value)
  1. unknown - addons/utime/lua/autorun/cl_utime.lua:144


[ERROR] addons/utime/lua/autorun/cl_utime.lua:144: attempt to call method 'IsValid' (a nil value)
  1. unknown - addons/utime/lua/autorun/cl_utime.lua:144


[ERROR] addons/utime/lua/autorun/cl_utime.lua:144: attempt to call method 'IsValid' (a nil value)
  1. unknown - addons/utime/lua/autorun/cl_utime.lua:144

i want help

[JamminR]

Are you using latest code from our Github repository for UTime?
Or some other version of UTime not made by Ulysses (there are several in the releases section)? If not Ulysses, you'd need to go as in the specific releases section top for the one you're using and ask, so anyone familiar with that release might be able to help.
If md = murder, it's possible the murder gamemode doesn't use standard functions that are included in Sandbox (like IsValid or trace.Entity), which is what UTime is originally written for.