4.3 and White page of death

+1. Here’s the bug from my error log:

[21-Aug-2015 13:53:23 UTC] PHP Fatal error: Class 'SLP_Settings' not found in /REMOVEDPATH/wp-content/plugins/store-locator-le/include/class.settings.php on line 6

Here the same. Is there already a solution.

Yes, that is the error I receive as well Brugman.

There is a pre-release 4.01 i believe which solves this issue.
See https://www.storelocatorplus.com/product/store-locator-plus-prerelease/

Sorry it is:
4.3.01 (2015-Aug)
Enhancement: Add ability to add-on packs to change map options via the JavaScript hook-and-filter system.
Fix: Address the admin “white screen” on some installs that are running older/outdated SLP add-on packs.
Fix: Clean up the floating action box on the manage locations tab.
Fix: Activation error “headers already sent” on new installs.
Fix: Address T_PAAMAYIM_NEKUDOTAYIM (double colon) warning in base_class.admin.php

Great. Will wait for the update.

The SLP release 4.3.01 has been published. Download is now available.
SLP 4.3 Info