What could cause my plugin’s options/settings page not to load?

If i had to venture a guess at the cause of the problem my initial thought would be toward the flush rules call.

As Andy said, having debug on helps a great deal, and if you really don’t want to see the errors, you can always use the debug log instead, using the following in your config file..

define('WP_DEBUG', true);          // Turn on debug mode
define('WP_DEBUG_LOG', true);      // Logs errors to wp-content/debug.log
define('WP_DEBUG_DISPLAY', false); // Disable displaying errors

With regard to your settings update not redirecting, typically that occurs when the nonce(s) are missing or incorrect, though i’ll admit it could be something else in your case.

Any errors shown with debug on? (or in the log if you’re using that method?)

Related Posts:

  1. framework for plugin/theme options panel? [closed]
  2. How do I add CSS options to my plugin without using inline styles?
  3. “Error: Options Page Not Found” on Settings Page Submission for an OOP Plugin
  4. Is get_option function cached?
  5. How come `wp_options` table does not have an index on `autoload`?
  6. Update Option Stored in Multi-Dimensional Array
  7. What are the advantages to the Settings API?
  8. Adding Widget form fields dynamically
  9. Where to store plugin settings fields
  10. Is get_option() faster than accessing get_transient()?
  11. What’s the best method for emptying an option created with the Settings API?
  12. Releasing new plugin version, how to rename old options keys?
  13. WordPress updates defined vs add_filter?
  14. Creating Settings Page with dropdowns for Plugin
  15. How to properly sanitize strings for update_option()
  16. How to add a new plugin page under desired Options page?
  17. How do I handle multiple Submit buttons in plugin’s option page?
  18. Deletion of shared options using uninstall.php
  19. Why won’t register_setting() create a setting?
  20. Multiple entries in get_option results? or why is _multiwidget set to 1?
  21. Dropdown list of pages to get page id to store in plugin options
  22. update_option is not working!
  23. update_option_{$option} Too Few Arguments
  24. Save user-specific options in WordPress admin
  25. How to store accumulate multiple option values in a single array using Options_API
  26. Creating option to allow user to select the page my plugin content will display on
  27. Unified Approach for Placing Option Pages
  28. array_map() for sanitizing $_POST
  29. WordPress plugin options and jQuery
  30. WordPress Plugin Setting’s POST
  31. Performance of several get_option() calls
  32. Extend plugin options page
  33. Can I use the different settings sections over different pages using the save options group?
  34. Options API – Validation Callback $input is NULL
  35. Best choice of options/settings framework for plugin/theme development
  36. Correct way check nonce (security) using old Options API
  37. How to store a medium amount of options?
  38. How to add settings subpage from a plugin to a settings page created in theme?
  39. Plugin options not being saved or created
  40. Remove Internal Style Sheet if no Value Provided?
  41. How to set “Site Address (URL)” programmatically on WP multisite?
  42. WordPress setting with select – where is my mistake?
  43. Using wp_parse_args to set up Plugin Default Settings
  44. Custom delete option button in plugin settings
  45. Storing product price data in the database
  46. How To Change Post Author Default?
  47. WP_Editor – Saving Value into Plugin Option – Stripping HTML
  48. Editing options pages?
  49. Multiple options pages validation for a plugin
  50. get_option() not returning expected value from plugin
  51. Parse form values before sending to options.php
  52. Prevent invalid or empty values from being saved to the database and retain the form field values upon error
  53. Update problem with update_option() in combination with register_setting()
  54. Insert/Update values to a table after blogname option etc. is updated
  55. Access bloginfo, get_option, and plugins_url from a non-core php file
  56. wordpress how to query wp_options table
  57. How Can I add Fields in wp-option table?
  58. Plugin Options Array Set to Undefined
  59. Checked() function on a multidimensional array
  60. get_option() will not work without access to wp-config.php
  61. Issue on Checkbox with Custom Option Page
  62. Make Database query only when option is updated
  63. The Correct Way to Use Nonce Field without Settings API
  64. Settings API: Setting default option via ‘get_option’ fails
  65. how to save wp_editor html content in options table
  66. Custom Plugin Options Won’t Update
  67. Problem with display data from get_option
  68. Use options to control jQuery plugin
  69. why does get_option( ‘home’ ) not work while using in plugin [closed]
  70. Plugin Options not saving options and doesn’t work
  71. What could cause a WP Option to get truncated?
  72. Decontruct serialized data array from wp_options
  73. Add multiple checkboxes as single field to Custom Shipping Method Settings Page
  74. How does one update complex options?
  75. update_option() passing empty array() but still updating
  76. Plugins Settings page not updating
  77. How to create plugin settings page for each admin user?
  78. Plugin setting page – update_option problem
  79. add_settings_error on validating plugin options API
  80. Cannot save settings value
  81. Array/List Edit in Backend
  82. What should I use instead of get_blog_option?
  83. Tie specific functions to options-update for limiting API requests
  84. Can’t switch theme after activation
  85. How do I build a settings panel under the plugin
  86. update_option() updating the option with an empty value?
  87. the correct way to use options from settings page [closed]
  88. Add_menu_page and saving settings
  89. Plugin options page – save two related options as one entry
  90. Saving multiple fields as array
  91. Options don’t save, validation callback not executed
  92. Menu_slug used for creating options page
  93. Modify a Themes Appearance >> Header admin screen from a plugin
  94. Settings API not Saving to Database or Display
  95. Admin Message after Plugin Option Updated
  96. Single sanitization callback for multiple fields
  97. How to get option values without requiring wp-load?
  98. Checking if the query is empty does not work
  99. Remove default wordpress roles
  100. Why my admin-ajax url returns 0 even after adding echo and die() at the end of function?