I uninstalled Java and reinstalled with the latest version 7.
Code:
Calibre2opds startup
====================
'
[INFO] Trying to locate Java on this system
[INFO] ====================================
[INFO] Java location not found via JAVA_HOME environment variable
[INFO] Java not found in default 32-bit JRE6 location
[INFO] Java not found in default 32-bit JRE7 location
[INFO] Java not found in default 64-bit JRE6 location
[INFO] Java found at default 64-bit JRE7 location [C:\Program Files (x86)\Java\j
re7]
'
"-----------------------"
" Calibre2Opds STARTING "
"-----------------------"
'
\Java\jre7\bin\JAVAW.EXE"" was unexpected at this time.
C:\Program Files (x86)\Calibre2Opds>