[xcrysden] problem with installation

[Mikhail Suetin]

Dear All,

I have tried to install XCrysDen using cygwin, but I did not succeed and got a message:
./xcrysden: line156: exec: wish: not found

I have successfully defined XCRYSDEN_TOPDIR and XCRYSDEN_SCRATCH:
XCRYSDEN_TOPDIR=/home/eaxev/xc-1.4.1bin-cygwin/XCrySDen-1.4.1bin-shared/
XCRYSDEN_SCRATCH=/home/eaxev/xc-1.4.1bin-cygwin/XCrySDen-1.4.1bin-shared/SCRATCH

Could you help me with it, please?

thank you,
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