both error logs says nothing about unsuccesful run of these extensions.
e.g: - start server (tray icon white, wamp works) - enable exif extension via tray dialog (icon becomes yellow, no error messages in both logs) - stop server via tray (icon turns red) - starting wamp again via tray dialog (icon becomes yellow, the only error message is in apache error log: [Mon Jan 04 16:36:08 2010] [warn] pid file D:/Serv/bin/apache/Apache2.2.11/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?)