System can't find IVR file

I am running Asterisk 1.4 with 2.0 GUI. We were having some problems with the GUI overwriting (deleting) some lines in the default context of extensions.conf. So I used the GUI config file editor to add the line back in. After doing that, the system can no longer find the IVR .wav file. The file was not manipulated in any way. Below is the error from the sip debug. Can someone help me to fix this issue? I am really at a loss as to where to begin. The file is named properly and is stored in /var/lib/asterisk/sounds/. Thanks for your help.
[Mar 24 18:35:04] WARNING[4190]: file.c:602 ast_openstream_full: File ivrprompt.wav does not exist in any format
[Mar 24 18:35:04] WARNING[4190]: file.c:912 ast_streamfile: Unable to open ivrprompt.wav (format 0x4 (ulaw)): No such file or directory
[Mar 24 18:35:04] WARNING[4190]: pbx.c:5702 pbx_builtin_background: ast_streamfile failed on SIP/7073-b4054980 for ivrprompt.wav
== Auto fallthrough, channel ‘SIP/7073-b4054980’ status is ‘UNKNOWN’