مشکل در آپگرید جوملا 1.5 به 2.5

[MAJIDOF]

با سلام جوملا من زمانی که میخوام مهاجرت کنم به جملا 2.5 موقع نصب آپگرید روی سرور این پیام رو میده و آپگرید کامل نمیشه. کسی میتونه کمکم کنه .مرسی
نسخه 1.5.23


Fatal error: Class 'JModelLegacy' not found in /home/casiosto/public_html/jupgrade/installation/models/configuration.php on line 19


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[cleanup]



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[install_db]


Fatal error: Class 'JModelLegacy' not found in /home/casiosto/public_html/jupgrade/installation/models/database.php on line 19


==========
[undefined] [undefined]


Warning: require_once(/home/casiosto/public_html/jupgrade/configuration.php) [function.require-once]: failed to open stream: No such file or directory in /home/casiosto/public_html/administrator/components/com_jupgrade/includes/jupgrade.class.php on line 88

Fatal error: require_once() [function.require]: Failed opening required '/home/casiosto/public_html/jupgrade/configuration.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/casiosto/public_html/administrator/components/com_jupgrade/includes/jupgrade.class.php on line 88