When testing against sca1001, I get the following error:
```
curl -XPOST -d'format=mediawiki' -d'url=http://link.springer.com/chapter/10.1007/11926078_68' http://sca1001:1970/url
"Internal server error"
```
The same is true with JSON:
```
curl -d '{"url":"http://link.springer.com/chapter/10.100":"mediawiki"}' --header "Content-Type: application/json" http://sca1001:1970/url
```
In `/var/log/citoid/main.log`, I see
```
Request made for: http://link.springer.com/chapter/10.1007/11926078_68
Server at http://localhost:1969/%s does not appear to be running.
```
It looks as if zotero is not actually running. Restarting citoid does not help.
It looks like this is a dependency issue in zotero (from `/var/log/citoid/zotero.log`):
```
./xpcshell: error while loading shared libraries: libXrender.so.1: cannot open shared object file: No such file or directory
```