Mothur Chimera Uchime Error – Requires UChime Executable

Hi,
I have been using chimera uchime for years with no problems and then one day I turn on my computer and get the following error message. As you can imagine, I am not happy! Please help.
[ERROR]: /home/X/common/sl/bin/mothur/uchime file does not exist. Mothur requires the Uchime executable.
[ERROR]: did not complete chimera.uchime.
I have tried searching for any information on this. The executable file is in the same place as Mothur, but it still does not work I then tried moving it to the current working directory, and still no luck. Oh, I have the most up to date version of Mothur. 1.
Thanks in advance!
