The CAPTCHA service found itself in an awkward situation

2014-08-04 22:24:51,367 WARN  [http-bio-7990-exec-3] @12FBVTTx1344x84x0 1fjqwkn 0:0:0:0:0:0:0:1 "POST /j_stash_security_check HTTP/1.1" c.a.s.i.s.s.PluginAuthenticationProvider Could not authenticate admin; authentication by com.atlassian.stash.stash-auth-crowd-sso:crowdSsoAuthHandler failed
com.atlassian.stash.user.AuthenticationSystemException: The CAPTCHA service found itself in an awkward situation
	at com.atlassian.stash.internal.auth.DefaultCaptchaService.isCaptchaValid(DefaultCaptchaService.java:219) ~[stash-service-impl-3.2.0.jar:na]
	at com.atlassian.stash.internal.auth.DefaultCaptchaService.checkCaptcha(DefaultCaptchaService.java:97) ~[stash-service-impl-3.2.0.jar:na]
	at com.atlassian.stash.internal.spring.security.PluginAuthenticationProvider.attemptAuthentication(PluginAuthenticationProvider.java:109) [PluginAuthenticationProvider.class:na]
	at com.atlassian.stash.internal.spring.security.PluginAuthenticationProvider.authenticate(PluginAuthenticationProvider.java:59) [PluginAuthenticationProvider.class:na]
	at com.atlassian.stash.internal.spring.security.StashAuthenticationFilter.doFilter(StashAuthenticationFilter.java:100) [StashAuthenticationFilter.class:na]
	at com.atlassian.stash.internal.web.auth.BeforeLoginPluginAuthenticationFilter.doInsideSpringSecurityChain(BeforeLoginPluginAuthenticationFilter.java:111) [BeforeLoginPluginAuthenticationFilter.class:na]
	at com.atlassian.stash.internal.web.auth.BeforeLoginPluginAuthenticationFilter.doFilter(BeforeLoginPluginAuthenticationFilter.java:77) [BeforeLoginPluginAuthenticationFilter.class:na]
	at com.atlassian.security.auth.trustedapps.filter.TrustedApplicationsFilter.doFilter(TrustedApplicationsFilter.java:100) [atlassian-trusted-apps-core-3.0.6.jar:na]
	at com.atlassian.oauth.serviceprovider.internal.servlet.OAuthFilter.doFilter(OAuthFilter.java:69) [atlassian-oauth-service-provider-plugin-1.9.2_1406589600000.jar:na]
	at com.atlassian.analytics.client.filter.DefaultAnalyticsFilter.doFilter(DefaultAnalyticsFilter.java:33) [analytics-client-3.35_1406589604000.jar:na]
	at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31) [atlassian-core-4.6.15.jar:na]
	at com.atlassian.stash.internal.web.auth.BeforeLoginPluginAuthenticationFilter.doBeforeBeforeLoginFilters(BeforeLoginPluginAuthenticationFilter.java:89) [BeforeLoginPluginAuthenticationFilter.class:na]
	at com.atlassian.stash.internal.web.auth.BeforeLoginPluginAuthenticationFilter.doFilter(BeforeLoginPluginAuthenticationFilter.java:75) [BeforeLoginPluginAuthenticationFilter.class:na]
	at com.atlassian.stash.internal.request.DefaultRequestManager.doAsRequest(DefaultRequestManager.java:84) [stash-service-impl-3.2.0.jar:na]
	at com.hazelcast.web.WebFilter.doFilter(WebFilter.java:446) [hazelcast-wm-3.3-RC2.jar:3.3-RC2]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_65]
	at java.lang.Thread.run(Thread.java:745) [na:1.7.0_65]
	... 143 frames trimmed