An error occurred while saving the URL rewrite Magento

[MiniPwnr]

I'm currently running Magento ver. 1.9.0.1 I would like to remove the .html prefix at the end of all url's on my site, but when I remove the .html from System > Configuration > Catalog > Search Engine Optimizations > Category URL Suffix and I try to reindex the "Catalog URL Rewrites", I got this error "An error occurred while saving the URL rewrite".

How can I fix this, so I can just remove the .html prefixes from my links?

[Brent W Peterson]

Can you post the error?

[DennisAtPS]

I have the same problem. The error message is literally:

• An error occurred while saving the URL rewrite

That is all the info that is provided. If there is more info to be had then please tell me where to find it and I will post it.

[MrKhoa99]

Hello DennisAtPS,

You try to re-index via command shell SSH.

Go to shell folder: cd shell

Execute re-index: php -f indexer.php reindexall