[求助]下面的错误如何解决？

sixland

我在打开cas时，出现如下错误？为什么？
Reading "C:\Fluent.Inc\tunnel.cas"...
      50 quadrilateral cells, zone  2, binary.
     700 quadrilateral cells, zone  3, binary.
    1330 2D interior faces, zone 10, binary.
      10 2D wall faces, zone  1, binary.
      90 2D wall faces, zone  4, binary.
       5 2D interior faces, zone  5, binary.
      10 2D interior faces, zone  6, binary.
       5 2D interior faces, zone  7, binary.
      15 2D outflow faces, zone  8, binary.
      15 2D velocity-inlet faces, zone  9, binary.
      85 2D interior faces, zone 11, binary.
     816 nodes, binary.
     816 node flags, binary.
Warning: this is a double-precision solver.
Building...
     grid,
     materials,
     interface,
     domains,
mixture
     zones,
default-interior:010
wall:001
default-interior
velocity_inlet.1
outflow.2
wall
top_t
back_t
front_t
tunnel_inner
train
     shell conduction zones,
Done.
Error: access: unbound variable
Error Object: get-var
Interrupting...
Done.