Title: problem after upgrade
Last modified: August 19, 2016

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# problem after upgrade

 *  [macuhail](https://wordpress.org/support/users/macuhail/)
 * (@macuhail)
 * [18 years, 3 months ago](https://wordpress.org/support/topic/problem-after-upgrade-3/)
 * I have a problem after an extended upgrade process. We had a 2.5 installation
   that got compromised. Someone was able to insert hidden spam links in several
   articles.
 * We made a copy of the database and reinstalled version 2.5. Then we removed the
   links from the articles and then we upgraded to version 2.5.1.
 * While the articles will show as one long list we get a “page not found” error
   whenever the title of an article is clicked. We entered a test article and the
   same thing happens.
 * Any ideas how to fix this?
 * Thanks for any suggestions

Viewing 1 replies (of 1 total)

 *  Thread Starter [macuhail](https://wordpress.org/support/users/macuhail/)
 * (@macuhail)
 * [18 years, 3 months ago](https://wordpress.org/support/topic/problem-after-upgrade-3/#post-800507)
 * I found the problem — a permalinks issue. Once I switched to default permalinks
   the problem was solved.

Viewing 1 replies (of 1 total)

 The topic ‘problem after upgrade’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 1 participant
 * Last reply from: [macuhail](https://wordpress.org/support/users/macuhail/)
 * Last activity: [18 years, 3 months ago](https://wordpress.org/support/topic/problem-after-upgrade-3/#post-800507)
 * Status: not resolved

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