مشكلة في دمج قاعتدي بيانات

اخواني اريد دمج قاعدتين ولما اضغط على اول خيار وهو التشييك على القاعده يطلع عندي هذا الخطا انه لايوجد اي شئ في القاعدة فما الحل ارجوكم
Import / Export
ImpEx build version : 1.71
Database cleanup & restart
Using includes/config.php for target config.

Altering tables
ImpEx will now Alter the tables in the vB database to include import id numbers.This is needed during the import process for maintaining refrences between the tables during an import.If you have large tables (i.e. lots of posts) this can take some time.They will also be left after the import if you need to link back to the origional vB userid.
moderator - importmoderatorid Completed
usergroup - importusergroupid Completed
ranks - importrankid Completed
poll - importpollid Completed
forum - importforumid Completed
forum - importcategoryid Completed
user - importuserid Completed
style - importstyleid Completed
thread - importthreadid Completed
post - importthreadid Completed
thread - importforumid Completed
smilie - importsmilieid Completed
pmtext - importpmid Completed
avatar - importavatarid Completed
customavatar - importcustomavatarid Completed
customprofilepic - importcustomprofilepicid Completed
post - importpostid Completed
attachment - importattachmentid Completed
pm - importpmid Completed
usernote - importusernoteid Completed
phrase - importphraseid Completed
subscription - importsubscriptionid Completed
subscriptionlog - importsubscriptionlogid Completed
Valid found tables :

Possiablly custom tables or incorrect prefix :
access NOT found.
adminhelp NOT found.
administrator NOT found.
adminlog NOT found.
adminmessage NOT found.
adminutil NOT found.
announcement NOT found.
announcementread NOT found.
attachment NOT found.
attachmentpermission NOT found.
attachmenttype NOT found.
attachmentviews NOT found.
avatar NOT found.
bbcode NOT found.
calendar NOT found.
calendarcustomfield NOT found.
calendarmoderator NOT found.
calendarpermission NOT found.
cpsession NOT found.
cron NOT found.
cronlog NOT found.
customavatar NOT found.
customprofilepic NOT found.
datastore NOT found.
deletionlog NOT found.
editlog NOT found.
event NOT found.
externalcache NOT found.
faq NOT found.
forum NOT found.
forumpermission NOT found.
forumread NOT found.
holiday NOT found.
icon NOT found.
imagecategory NOT found.
imagecategorypermission NOT found.
infraction NOT found.
infractiongroup NOT found.
infractionlevel NOT found.
language NOT found.
mailqueue NOT found.
moderation NOT found.
moderator NOT found.
moderatorlog NOT found.
passwordhistory NOT found.
paymentapi NOT found.
paymentinfo NOT found.
paymenttransaction NOT found.
phrase NOT found.
phrasetype NOT found.
plugin NOT found.
pm NOT found.
pmreceipt NOT found.
pmtext NOT found.
podcast NOT found.
podcasturl NOT found.
poll NOT found.
pollvote NOT found.
post NOT found.
posthash NOT found.
postindex NOT found.
postparsed NOT found.
product NOT found.
productcode NOT found.
productdependency NOT found.
profilefield NOT found.
ranks NOT found.
regimage NOT found.
reminder NOT found.
reputation NOT found.
reputationlevel NOT found.
rssfeed NOT found.
rsslog NOT found.
search NOT found.
session NOT found.
setting NOT found.
settinggroup NOT found.
sigparsed NOT found.
sigpic NOT found.
smilie NOT found.
stats NOT found.
strikes NOT found.
style NOT found.
subscribeevent NOT found.
subscribeforum NOT found.
subscribethread NOT found.
subscription NOT found.
subscriptionlog NOT found.
subscriptionpermission NOT found.
tachyforumpost NOT found.
tachythreadpost NOT found.
template NOT found.
templatehistory NOT found.
thread NOT found.
threadrate NOT found.
threadread NOT found.
threadredirect NOT found.
threadviews NOT found.
upgradelog NOT found.
user NOT found.
useractivation NOT found.
userban NOT found.
userfield NOT found.
usergroup NOT found.
usergroupleader NOT found.
usergrouprequest NOT found.
usernote NOT found.
userpromotion NOT found.
usertextfield NOT found.
usertitle NOT found.
word NOT found. Failed Check database permissions and connection, or table prefix to ensure its correct.
فما الحل

يوجد خطأ في الإتصال بإحدى القاعدتين كما يبدوا من الكود ... تأكد من معلومات الإتصال بالقاعدتين ... تحياتي .