PDF with uppercase file extension do not render in pdf macro

ERROR [http-8420-2] [[Standalone].[localhost].[/].[servlet-module-container-servlet]] log Servlet.service() for servlet serv
let-module-container-servlet threw exception
java.lang.IllegalArgumentException: Cannot create conversion task for file extension, supported types are .pdf, .ppt and .pptx, but got : network pe
rformance troubleshooting.PDF
        at com.benryan.components.DefaultSlideCacheManager.queueNewConversion(DefaultSlideCacheManager.java:252)
        at com.benryan.components.DefaultSlideCacheManager.getFuture(DefaultSlideCacheManager.java:95)
        at com.benryan.components.DefaultSlideCacheManager.getSlideConversionData(DefaultSlideCacheManager.java:61)
        at com.benryan.conversion.PPTSlideServlet.doGet(PPTSlideServlet.java:86)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at com.atlassian.plugin.servlet.DelegatingPluginServlet.service(DelegatingPluginServlet.java:42)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at com.atlassian.plugin.servlet.ServletModuleContainerServlet.service(ServletModuleContainerServlet.java:52)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
        at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
        at com.atlassian.applinks.core.rest.context.ContextFilter.doFilter(ContextFilter.java:25)
        at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
        at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
        at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
        at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at com.atlassian.confluence.security.websudo.MessagesDecoratorFilter.doFilter(MessagesDecoratorFilter.java:59)
        at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at com.opensymphony.sitemesh.webapp.SiteMeshFilter.obtainContent(SiteMeshFilter.java:129)
        at com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:77)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
        at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
        at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at com.atlassian.confluence.util.LoggingContextFilter.doFilter(LoggingContextFilter.java:40)
        at com.atlassian.core.filters.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:31)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:211)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at com.atlassian.security.auth.trustedapps.filter.TrustedApplicationsFilter.doFilter(TrustedApplicationsFilter.java:98)

2012-09-25 09:58:03,766 INFO [http-8420-2] [atlassian.confluence.status.SystemErrorInformationLogger] writeToLog 
Request Unique ID : 85aed95f-dcc0-4875-ba9c-8d9fac5017ea
--------------------------
JVM Stats
--------------------------
allocatedHeap = 530186240
availablePermGen = 89052424
usedMemory = 411870048
totalMemory = 530186240
freeMemory = 118316192
maxPermGen = 268435456
usedPermGen = 179383032
freeMemoryInMegabytes = 112
freeAllocatedHeap = 118316192
availableHeap = 118316192
usedMemoryInMegabytes = 392
maxHeap = 530186240
usedHeap = 411870048
totalMemoryInMegabytes = 505
--------------------------
Request Information
--------------------------
URL: http://localhost:8420/500page.jsp
Scheme: http
Server: localhost
Port: 8420
URI: /500page.jsp
Context Path: 
Servlet Path: /500page.jsp
Path Info: null
Query String: attachmentId=13664257&pageId=13598724&rand=3%2E48845800152529e%2B307&attachment=network%20performance%20troubleshooting%2EPDF
--------------------------
Attributes
--------------------------
javax.servlet.forward.request_uri: /plugins/servlet/pptslide
javax.servlet.forward.context_path: 
javax.servlet.forward.servlet_path: /plugins/servlet
javax.servlet.forward.path_info: /500page.jsp
javax.servlet.forward.query_string: attachmentId=13664257&pageId=13598724&rand=3%2E48845800152529e%2B307&attachment=network%20performance%20troubleshooting%2EPDF
os_securityfilter_already_filtered: true
com.atlassian.seraph.auth.LoginReason: OK
com.atlassian.confluence.security.websudo.MessagesDecoratorFilter__already_filtered__: true
atlassian.core.seraph.original.url: /plugins/servlet/pptslide?attachmentId=13664257&pageId=13598724&rand=3%2E48845800152529e%2B307&attachment=network%20performance%20troubleshooting%2EPDF
javax.servlet.error.status_code: 500
javax.servlet.error.servlet_name: servlet-module-container-servlet
com.atlassian.gzipfilter.GzipFilter_already_filtered: true
loginfilter.already.filtered: true
com.atlassian.confluence.web.ConfluenceJohnsonFilter_already_filtered: true
Confluence-Request-Time: 1348592283676
gzipMimeTypes: text/.*,application/x-javascript,application/javascript,application/xml,application/xhtml\+xml
javax.servlet.error.message: 
com.opensymphony.sitemesh.APPLIED_ONCE: true
javamelody.request: /plugins/servlet/pptslide?attachmentId=13664257&pageId=13598724&rand=3%2E48845800152529e%2B307&attachment=network%20performance%20troubleshooting%2EPDF GET
com.atlassian.core.filters.HeaderSanitisingFilter_already_filtered: true
__cleanup_recursion_counter: 0
com.atlassian.gzipfilter.org.tuckey.web.filters.urlrewrite.RuleMatched: true
com.atlassian.confluence.web.filter.validateparam.RequestParamValidationFilter_already_filtered: true
javax.servlet.error.exception: java.lang.IllegalArgumentException: Cannot create conversion task for file extension, supported types are .pdf, .ppt and .pptx, but got : network performance troubleshooting.PDF
javax.servlet.error.request_uri: /plugins/servlet/pptslide
--------------------------
Parameters
--------------------------
attachmentId : 13664257
pageId : 13598724
rand : 3.48845800152529e+307
attachment : network performance troubleshooting.PDF
caused by: java.lang.IllegalArgumentException: Cannot create conversion task for file extension, supported types are .pdf, .ppt and .pptx, but got : network performance troubleshooting.PDF
at com.benryan.components.DefaultSlideCacheManager.queueNewConversion(DefaultSlideCacheManager.java:252)