Cannot rescan template file an error occurs..

This has only started happening recently, so i am unable to rescan the the template files. ie when I click 'rescan template files' this error occurs ->

"An error occurred at http://www.ultimateschoolsrugby.com/admin/build/views/ajax/display/kick_...." which appears in pop up block.

What do you think could be causing this?

I took this from my log book errors - i dont know whether it shows in the following code?

ultimateschoolsrugby.com [Sun Feb 07 13:11:46 2010] [error] [client 86.154.241.154] query: INSERT INTO watchdog
ultimateschoolsrugby.com [Sun Feb 07 13:11:46 2010] [error] [client 86.154.241.154] (uid, type, message, variables, severity, link, location, referer, hostname, timestamp)
ultimateschoolsrugby.com [Sun Feb 07 13:11:46 2010] [error] [client 86.154.241.154] VALUES
ultimateschoolsrugby.com [Sun Feb 07 13:11:46 2010] [error] [client 86.154.241.154] (1, 'php', '%message in %file on line %line.', 'a:4:{s:6:\\"%error\\";s:12:\\"user warning\\";s:8:\\"%message\\";s:177:\\"MySQL server has gone away\\nquery: SELECT dst FROM url_alias WHERE src = 'news_international_rugby' AND language IN('en', '') ORDER BY language DESC\\";s:5:\\"%file\\";s:66:\\"/home/sites/ultimateschoolsrugby.com/public_html/includes/path.inc\\";s:5:\\"%line\\";i:69;}', 3, '', 'http://www.ultimateschoolsrugby.com/?q=user', '', '86.154.241.154', 1265548306) in /home/sites/ultimateschoolsrugby.com/public_html/includes/database.mysql.inc on line 128
ultimateschoolsrugby.com [Sun Feb 07 13:11:46 2010] [error] [client 86.154.241.154] PHP Warning: MySQL server has gone away
ultimateschoolsrugby.com [Sun Feb 07 13:11:46 2010] [error] [client 86.154.241.154] query: INSERT INTO watchdog

Many thanks

Alex