Fatal error: Class 'PEAR' not found in /usr/local/php5-20110426-093151/lib/php/PEAR/Frontend.php on line 47

Call Stack:
    0.0013     632800   1. {main}() /www/redotheoffice/codeview/web/index.php:0
    0.0168    2819416   2. sfContext->dispatch() /www/redotheoffice/codeview/web/index.php:13
    0.0168    2819464   3. sfFrontWebController->dispatch() /www/redotheoffice/lib/symfony/1.4/lib/util/sfContext.class.php:170
    0.0169    2830752   4. sfController->forward() /www/redotheoffice/lib/symfony/1.4/lib/controller/sfFrontWebController.class.php:48
    0.0187    2981016   5. sfFilterChain->execute() /www/redotheoffice/lib/symfony/1.4/lib/controller/sfController.class.php:229
    0.0189    2982456   6. sfRenderingFilter->execute() /www/redotheoffice/lib/symfony/1.4/lib/filter/sfFilterChain.class.php:53
    0.0189    2982456   7. sfFilterChain->execute() /www/redotheoffice/lib/symfony/1.4/lib/filter/sfRenderingFilter.class.php:33
    0.0190    2983848   8. sfExecutionFilter->execute() /www/redotheoffice/lib/symfony/1.4/lib/filter/sfFilterChain.class.php:53
    0.0191    2984976   9. sfExecutionFilter->handleAction() /www/redotheoffice/lib/symfony/1.4/lib/filter/sfExecutionFilter.class.php:42
    0.0191    2984976  10. sfExecutionFilter->executeAction() /www/redotheoffice/lib/symfony/1.4/lib/filter/sfExecutionFilter.class.php:78
    0.0191    2985024  11. sfActions->execute() /www/redotheoffice/lib/symfony/1.4/lib/filter/sfExecutionFilter.class.php:92
    0.0192    2986512  12. BasesfCodeViewActions->executeIndex() /www/redotheoffice/lib/symfony/1.4/lib/action/sfActions.class.php:60
    0.0194    3060528  13. sfCodeViewer->__construct() /www/redotheoffice/codeview/plugins/sfCodeViewPlugin/modules/sfCodeView/lib/BasesfCodeViewActions.class.php:37
    0.0194    3061056  14. ReflectionClass->__construct() /www/redotheoffice/codeview/plugins/sfCodeViewPlugin/lib/sfCodeViewer.class.php:20
    0.0194    3061416  15. sfCoreAutoload->autoload() /www/redotheoffice/lib/symfony/1.4/lib/autoload/sfCoreAutoload.class.php:0
    0.0548    3081456  16. require('/www/redotheoffice/lib/symfony/1.4/lib/plugin/sfPearFrontendPlugin.class.php') /www/redotheoffice/lib/symfony/1.4/lib/autoload/sfCoreAutoload.class.php:99
    0.0558    3141896  17. require_once('/usr/local/php5-20110426-093151/lib/php/PEAR/Frontend.php') /www/redotheoffice/lib/symfony/1.4/lib/plugin/sfPearFrontendPlugin.class.php:11