(1) When Activating LiveLinks
If you are seeing an error that looks like this when you try to activate LiveLinks…
Fatal error: Cannot redeclare dap_filter_posts() (previously declared in /home/birdtric/public_html/wp-content/plugins/DAP-WP-LiveLinks/DAP-WP-LiveLinks.php:11) in /home/birdtric/public_html/wp-content/plugins/DAP-WP-LiveLinks/DAP-WP-LiveLinks.php on line 11
Solution A) This could be because you have incorrectly named the DAP or Livelinks folders.
Remember, the dap folder must always be named dap (all lower case – and not, say, dap_v3.0). And the livelinks folder must be named DAP-WP-LiveLinks .
Solution B) It is possible that your web site does not meet the minimum requirements to run DAP .
If you open a ticket and give us your FTP info and your WordPress Admin login info, we can confirm this to you right away.
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If you are seeing an error that looks like this when you try to activate LiveLinks…
Oops! Could not create the config file (dap-config.php). Please make the ‘dap’ folder writable by doing CHMOD 755 (and if that doesn’t work, then try CHMOD 777.)
Installation failed. Please de-activate LiveLinks and re-activate it when you’ve fixed the issue. (106)
* CHMOD just the dap directory to 777.
* Then de-activate and activate the LiveLinks plugin.
* This time around, it should be able create the dap-config.php file within the dap directory. You should see the successful installation message.
* CHMOD just the dap directory back to 755.
If that doesn’t work, then open a ticket with the FTP info and WP admin info.
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(2) Session Error
If you see an error that looks like this…
Fatal error: Dap_Session::isLoggedIn() [dap-session.isloggedin]: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition “Dap_Session” of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition in /home/site/public_html/dap/inc/classes/Dap_Session.class.php on line 41
This is basically caused by someone else’s 3rd-party WordPress plugin that is wiping out the “session” data (or user data stored in memory) which DAP relies on to store the user information. So there are two things you can try…
- See if you have a plugin by name “WordPress Automattic Upgrade” in your wordpress plugins page.This has created many issues for so many other plugins too, including LiveLinks. Just de-activate this plugin, and your error should go away. Also, if you are using WordPress version 2.7.1, you don’t really need this plugin any more – the automatic upgrade feature has been built right into this version.
- See if you have a plugin for doing “Captcha” – this is where to prevent bots from spamming your comments, your visitor is presented with some kind of an image to verify that they are human. Try with that de-activated.
- If none of the above worked, or if you don’t have any of the above plugins active and you’re still seeing the error, then just try de-activating all other plugins temporarily (except LiveLinks, of course), and turn them back on one-by-one.
Refresh your blog page every time you activate a plugin. That way, you will know which is the plugin that is causing the error.
If that still doesn’t help, just open a support ticket and we’ll take care of it.
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(3) PDO Error
You see an error like this:
Fatal error: Class ‘PDO’ not found in /home1/knowlee3/public_html/buildamagneticnetwork/dap/inc/classes/Dap_Connection.class.php on line 19
If DAP had been working fine on your web site, and you all of a sudden see this error, then your host quietly pulled the rug from under your feet 
. This appears because they either deliberately or mistakenly disabled the “PDO” library, which is a must-have requirement for DAP to run.
So check with your host and ask them “if they disabled PHP/PDO for MySQL on your server recently”.
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(4) Memory Allocation
You see an error like this:
Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 16 bytes) in /home/yoursite.com/public_html/dap/inc/classes/Dap_Connection.class.php on line 19
If this happens just once, then just ignore it.
But if it occurs more than once, then it could be because:
a) You recently made some changes to your DAP files or web site files, and overwrote/updated your dap-config.php file with the wrong database information. Even though it shows up like a memory issue, in reality it could be because DAP is unable to connect to the database because of incorrect information in the dap config file.
b) Your server legitimately has a low memory limit set by your host, and your host needs to increase the memory allocated to PHP/PDO. Open a ticket with your web host to do this.
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(5) Simple-Pie & Memory Allocation
You see an error like this:
Fatal error: Allowed memory size of 37423432 bytes exhausted (tried to allocate 371520 bytes) in /…/public_html/~username/wp-includes/class-simplepie.php
Open the file wp-config.php (which is in your blog’s main folder)
Add this line at the top…
define('WP_MEMORY_LIMIT', '64M');
That should take care of the error.