Stack overflow exception while importing BibTex snippet

[Daniel Zoller]

#!

[ERROR]
[org.bibsonomy.webapp.filters.ContextPathFilter] - Error during filter
execution.
?abstractGrouping=public&overwrite=true&editBeforeImport=false&selTab=1&ckey=539d6a1eea0eda
30061e172abe58bbbb with referer null
org.springframework.web.util.NestedServletException: Handler processing
failed; nested exception is java.lang.StackOverflowError
       at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:972)
       at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
       at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
       at

...

Caused by: java.lang.StackOverflowError
       at java.util.regex.Pattern$BranchConn.match(Pattern.java:4466)
       at java.util.regex.Pattern$CharProperty.match(Pattern.java:3694)
       at java.util.regex.Pattern$Branch.match(Pattern.java:4502)
       at java.util.regex.Pattern$GroupHead.match(Pattern.java:4556)
       at java.util.regex.Pattern$Loop.match(Pattern.java:4683)
       at java.util.regex.Pattern$GroupTail.match(Pattern.java:4615)
       at java.util.regex.Pattern$BranchConn.match(Pattern.java:4466)
       at java.util.regex.Pattern$CharProperty.match(Pattern.java:3694)
       at java.util.regex.Pattern$Branch.match(Pattern.java:4502)
       at java.util.regex.Pattern$GroupHead.match(Pattern.java:4556)
       at java.util.regex.Pattern$Loop.match(Pattern.java:4683)
       at java.util.regex.Pattern$GroupTail.match(Pattern.java:4615)
       at java.util.regex.Pattern$BranchConn.match(Pattern.java:4466)
       at java.util.regex.Pattern$CharProperty.match(Pattern.java:3694)
       at java.util.regex.Pattern$Branch.match(Pattern.java:4502)