Javascript is required to view this map.

-> http://drupal.org/node/266595#comment-1211750

...?

Szy.

I'm guessing it's something trying to insert a map too late in the theming and not being able to add scripts to the header.

Or possibly a caching issue. Installing insert_views to have a look.

Can't reproduce. Could you describe your setup in more detail?

Hmm, that's odd, there's slight evidence of corruption on the map data (the opening less than on CDATA is being expanded.)

Which usually means something is filtering after the map is expanded...

Investigating.

Hmm, looks like that was a filter order thing. It didn't affect my test site though.

Could you describe your input format, including the rearrange order? Could I also get a list of enabled modules, and what your performance settings under admin/settings/performance are? Also, could I get an export of the view?

I have also the problem that I see "Javascript is required to view this map".

E.g. overhere
http://www.hightechstartups.nl/investors/3i

The weird thing is however is that sometimes it works and when I login it works all the time. It seems to be some timing related issue. If I can help providing more details let me know. I'm running drupal 6.9 with the latest release of gmap

@guzzi, just find another Drupal site where Gmap works and compare: map's place
in HTML code, reference to script at maps.google.com and all Gmap module's scripts.

During my first visit there was no map, only 'Javascript is required...'. But the map
appeared when I visited your site second time -> attachment.

... was it script, loaded succesfully from cache during second time, because
for the first time it was loaded too late?

Hope I am clear in my English-like writing ;)

Szy.

I've recently come across this same issue, but only with Internet Explorer version 7. It works fine for me with Firefox, Chrome and IE8. In IE7 I get a 'GUnload' is undefined error.

And I should note --- it doesn't happen all the time. Sometimes it works :)

I fixed this issue on my end just by clearing the drupal cache

I don't think clearing the cache is a solution. I've been fighting with this issue since the beginning of the year, and nothing seems to be the definite solution.

Patching the gmap module seems to make gmap work a lot better, see #286653: Patch to use JS Aggregation or JS at the bottom of the page for more info. Still not committed to dev version of gmap (?!).

I thought that patch mentioned above fixed all issues, but it just seems to make them happen less often. I'm using dev-version of location module, and after some update during July I'm getting this "Javascript is required to view this map" error again more often. I use dev-version because there were some SQL errors in my log reports coming from location_cck module, which are fixed in dev.

Now it seems to happen more often in the block where I want to show a CCK locationrelated to a node. I noticed that when the error comes, the code is
..."id": "auto1map", "markers": [ { "latitude": 61,497221, "longitude": 23,753521 ...
in the scripts-element of the page and when it works the code is
..."id": "auto1map", "markers": [ { "latitude": 61.497221, "longitude": 23.753521 ...
(commas have changed to dots).

There is a huge difference in the js-code between successful and unsuccessful loading of the whole map (page view). When it fails, there are 1675 chars, compared to 41000+ chars on working map.

This has to be some sort of timing or cache related issue, as some one mentioned already before.

I've had the same issue but it's fixed on our site.

Here's how, hope you'll find some clues to help.

The map worked fine untill we started caching. We're using custom caching btw. The only variable that changed whether the map or the Javascript notice was shown, was caching on or off. Luckily I managed to circumvent it bij placing the gmap_parse_macro and gmap theme call outside the cached code so they are always executed, caching or no caching. Don't know what actually is the thing that fixed it but this helped us. Good luck!

$macro = "[gmap align=Center|zoom=15 |center={$map['latitude']},{$map['longitude']} |width=768px |height=400px |control=Small |type=Map]";
$gmap = gmap_parse_macro($macro);
$marker['latitude'] = $gmap['latitude'];
$marker['longitude'] = $gmap['longitude'];
...
...
$gmap_display = theme('gmap', array('#settings' => $gmap));

Great suggestion!
What file was that in? gmap_location.module?
I found similar code in there but not exactly the same. I know just enough php to be dangerous. Could you explain a little bit clearer (dummy's guide)?

Thanks for your help!
Tamela

I disabled 'Optimize JavaScript files' and saw my version of this issue disappear.

I am cross posting because I had a similar issue and took me a few hours to find

I had a specific issue of javascript error when I had a gmap in a panel page. It ended up being a javascript error caused by ctools.

the solution for me is here: http://drupal.org/node/888254

No usar AJAX render, con eso el script de google corre sin problemas.

Sometimes this will happen if you don't have a valid API key. For example, I got this error using the same key on stage and dev.