[maplab-users] mapedit preview map returns internal server error

[Bryan Keith]

Thanks, Jeff.  Previously I wrote that I had 3 shapefiles and a tiff. 
That was wrong.  I have 3 shapefiles and a sid image.  I removed the 
sid, and then "preview map" worked fine.  Then I added the sid back in, 
and "preview map" still worked fine.  Hmm.  The map files are identical 
again.  I opened the original mapfile, and I got the error.  I opened 
the new map file, and I also got the error.  I removed the sid, and 
"preview" map worked again.  Back where I started, and I can reproduce 
the problem (remove the sid, everything works...).  Does this 
information help locate the problem?

Does MapLab (and MapServer) use GDAL for tiffs?  I assume it uses GDAL 
for sids.  I'm wondering if GDAL/OGR are working correctly with MapLab. 
  When I built the map file, I used an OGRCONNECTION to plot points from 
an ovf (VRT) file.  I had problems with that mapfile and converted the 
ovf to a shapefile in a quick attempt to get things working.  Again, the 
problem wasn't with the mapfile and the ogrconnection (shp2img worked) 
but apparently with "preview map" in MapEdit and the ogr connection 
(though I should do more testing to confirm this).  I'm planning on 
replacing the shapefile with the ovf.  In the meantime if this sounds 
familiar to anyone, let me know.

I hope all this is clear.

Bryan

Jeff McKenna wrote:
> hmm, could you try removing layers to make the mapfile even simpler and 
> still throw the error?  And then possibly attach that single-layer 
> mapfile to an email sent back to this list so all can see.
> 
> jeff
> 
> 
> 
> 
> Bryan Keith wrote:
>> Hello,
>>
>> I installed ms4w and maplab on a windows 2000 machine and successfully 
>> made and deployed a simple mapping application on our intranet.
>>
>> Now I can go to MapEdit and open the map file.  When I try to "Preview 
>> Map", I get an "unhandled win32 exception occurred in php.exe" and 
>> "internal server error".  "Preview Map" worked fine while I was building 
>> the map file before deploying with the GMap Factory.  It's the same map 
>> file that's used in the deployed application that continues to work. 
>> Also, that map file returns a good image using shp2img.  Also, "preview 
>> map" still works with the tutorial map file.  The problem map file is 
>> quite simple: 3 shapefiles and a tiff.
>>
>> Anyone know what's going on here?  If you need more information to help 
>> figure out the problem, please let me know.  Thank you.
>>
>> Bryan
>>
>> Bryan Keith
>> GIS Specialist
>> Geomega, Inc.
>> Boulder, CO, USA
> 
> 
>