Wikimedia Bugzilla is closed!

Can you post your mapping related configuration?

$egMapsDefaultService = "openlayers";
$egMapsAvailableServices = array('googlemaps2', 'yahoomaps',
'openlayers','osm');
and the corosponding API Keys

I used this configuration and copied the wikitext of your map, and it works. Are you sure your API key is correct? Why are you using Google Maps v2?

I'm using googlemaps v2 because I always get the error that my browser is not compatible with googlemaps v3. I tested FF IE, Safari and Opera

I checked my API key and made a "demo-page" for the bug.
The strange thing is, that the maps works on this page, although I copied the wikitext from the page I postet at first

http://www.wecowi.de/wiki/WeCoWi:Bug_30727

Google Maps v3 should work, as should OpenLayers, and they both are on many wikis for many people, so I really think you're config is wrong. Likely suspects: API key, script path

The thing is, that it mainly works. Only in some context not.

Please compare this
http://www.wecowi.de/wiki/Au%C3%9Fenseiter_%28O.C.,_California%29#Drehorte
with this
http://www.wecowi.de/wiki/WeCoWi:Bug_30727/googlemaps_v3

the same wikicode does not work on the one page but on the other.

So it seams that all works correctly but in some cases there is some kind of interference with whatever, I don't know. But it does not work always. Please take a closer look on the two pages I posted above

They are both working for me...

Well that's really strange... now they also work for me.
I assign this bug to myself to keep an eye on this issue if any problems return
#30375 is also related

Well now the error is there again
It seams to me, that this might be some caching problem.
Sometimes Crtl+Shift+R in Firefox makes the map load

Well, it's not a caching issue.
I set
$wgMainCacheType = CACHE_NONE;
$wgParserCacheType = CACHE_NONE;
$wgMessageCacheType = CACHE_NONE;
in my LocalSettings and the error that the map is not loaded cause my firefox 6.0.2 is not compatible with googlemaps v3 although googlemaps v3 is deactivated in my configuration. So something is going totaly wrong here

This are my settings for the maps extension
$egMapsDefaultService = "openlayers";
$egMapsAvailableServices = array('googlemaps2', 'yahoomaps', 'openlayers','osm');

and this
{{#display_points:33.86410, -118.40246~Strandpromenade;33.72923, -118.344147~Golfplatz}}
should be displayed with openlayers when I understood the configuration options correctly

Well I now even tryed to create a screencapture, but all software for this is total bullshit. The point is, that repeatingly reloading the page makes the map work.

It also works the other way round, reloading the page tree of four times and the maps disappreas and my browser is not compatible with googlemaps v3 anymore. Although it isn't even activated

BTW: when including the options before including the extensions (that's the other way round as it is described in the manuel) the options are parsed correctly and openlayers is loaded by default

setting $egMapsDefaultService = 'googlemaps2'; does not have the same effect as setting service=googlemaps2 in the parser function.
The first still loads googlemaps V3

Bug in legacy version