Title: Rebuild Cache Now Errors
Last modified: September 8, 2017

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# Rebuild Cache Now Errors

 *  [Markman1](https://wordpress.org/support/users/markman1/)
 * (@markman1)
 * [8 years, 8 months ago](https://wordpress.org/support/topic/rebuild-cache-now-errors/)
 * Need assistance with AMR Users version 4.9.
 * When I click on Rebuild Cache Now I get errors
 * Notice: Undefined variable: tmp in C:\inetpub\wwwroot\ImpactMDS_WP\wp-content\
   plugins\amr-users-plus\amr-users-alpha-navigation.php on line 351
 * Notice: Undefined variable: tmp in C:\inetpub\wwwroot\ImpactMDS_WP\wp-content\
   plugins\amr-users-plus\amr-users-alpha-navigation.php on line 354
 * Notice: Undefined variable: tmp in C:\inetpub\wwwroot\ImpactMDS_WP\wp-content\
   plugins\amr-users-plus\amr-users-alpha-navigation.php on line 351
 * Notice: Undefined variable: tmp in C:\inetpub\wwwroot\ImpactMDS_WP\wp-content\
   plugins\amr-users-plus\amr-users-alpha-navigation.php on line 354
    what can I
   do to fix?
 * Thanks
 * Mark
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Frebuild-cache-now-errors%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [anmari](https://wordpress.org/support/users/anmari/)
 * (@anmari)
 * [8 years, 8 months ago](https://wordpress.org/support/topic/rebuild-cache-now-errors/#post-9481003)
 * Hi,
 * Looking at the code, it seems $tmp **might** be undefined if a mb_substr of the
   field being used for the alphabetical index doesn’t return a value, which sounds
   strange. If there is strange config it should at least return an empty string
   or a boolean false.
 * If you not intending to use alpha nav, unticking it from the overview settings
   page should stop the plugin trying to create the index values.
 * The other possibility is that the code got corrupted? OR that you dont have multibyte(
   mb_) module enabled – but then it would give undefined function.
 * If you think the alpah nav config is ok, maybe try reloading clean code? Please
   let me know how you go. I’ll dabble around and see if I can recreate that message.
 *  Plugin Author [anmari](https://wordpress.org/support/users/anmari/)
 * (@anmari)
 * [8 years, 8 months ago](https://wordpress.org/support/topic/rebuild-cache-now-errors/#post-9481057)
 * I’ve played around trying to recreate what you describe and am unable to. I work
   with debug on all the time.
 * So I can only suggest try reloading clean code of latest version. Perhaps you
   accidentally edited something ?

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Rebuild Cache Now Errors’ is closed to new replies.

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 * [amr users](https://wordpress.org/plugins/amr-users/)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/amr-users/unresolved/)
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 * 2 replies
 * 2 participants
 * Last reply from: [anmari](https://wordpress.org/support/users/anmari/)
 * Last activity: [8 years, 8 months ago](https://wordpress.org/support/topic/rebuild-cache-now-errors/#post-9481057)
 * Status: not resolved