Preview not available message on thumbnail tab

[sropiak]

OK, so far life is good. I imported some pdf files, searching seems to work, but thumbnails not so good. I see the above when I click the tab and see the following in the dms log:

21.08.2014 15:58:44,272 ERROR (com.logicaldoc.core.document.thumbnail.PdfThumbnailBuilder: 119) -- Cannot run program "gs": CreateProcess error=2, The system cannot find the file specified
21.08.2014 15:58:44,334 WARN (com.logicaldoc.core.document.thumbnail.ThumbnailManager: 92) -- Error creating thumbnail for document: 3506247 7610-100-26-00C_M150B_83-89
java.io.IOException: Thumbnail building Error in IMG to JPEG conversion
at com.logicaldoc.core.document.thumbnail.PdfThumbnailBuilder.buildThumbnail(PdfThumbnailBuilder.java:35)
at com.logicaldoc.core.document.thumbnail.ThumbnailManager.createTumbnail(ThumbnailManager.java:85)
at com.logicaldoc.web.DocumentPreview.createPreviewResource(DocumentPreview.java:148)
at com.logicaldoc.web.DocumentPreview.doGet(DocumentPreview.java:113)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.logicaldoc.web.CharsetFilter.doFilter(CharsetFilter.java:26)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.logicaldoc.web.SessionFilter.doFilter(SessionFilter.java:61)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:164)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:141)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:90)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:417)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: Error in IMG to JPEG conversion
at com.logicaldoc.core.document.thumbnail.ImageThumbnailBuilder.buildThumbnail(ImageThumbnailBuilder.java:63)
at com.logicaldoc.core.document.thumbnail.PdfThumbnailBuilder.buildThumbnail(PdfThumbnailBuilder.java:33)
... 36 more
Caused by: java.lang.Exception: Empty thumbnail image
at com.logicaldoc.core.document.thumbnail.ImageThumbnailBuilder.buildThumbnail(ImageThumbnailBuilder.java:61)
... 37 more
21.08.2014 15:58:44,350 ERROR (com.logicaldoc.core.store.FSStorer: 172) -- \docs\350\624\7\doc\1.0-thumb.jpg (The system cannot find the file specified)
21.08.2014 15:58:54,303 WARN (com.logicaldoc.util.exec.Exec: 103) -- Timeout command convert -compress JPEG -quality 93 -resize x800 C:\logicaldoc\tomcat\temp\rendertmb8689305457025185643thumb.jpg C:\logicaldoc\tomcat\temp\dest5739864901797453561thumb.jpg

[mmeschieri]

To have the preview running you have to install and configure a set of external tools: http://docs.logicaldoc.com/en/installat ... tware.html