Each of them (Cygwin and NX) installed their own cygwin1.dll.
Neither will run w/o their cygwin1.dll available, and neither will
run if both of the cygwin1.dll files are available.

What do I do?

c:\cygwin\bin\cygwin1.dll
c:\program files\nx client for windows\bin\cygwin1.dll

Whichever app I want to use, I have to rename the other's DLL.
Obviously this can be very annoying. What can I do to resolve?