Ciao,
i've done a fresh new installation of BBB 0.71a (Ubuntu 10.04) from
scratch. Everything works fine, except for load presentation function. When
i press "load" (a PDF file) BBB show a message as "I/O error. Please
contact system administrator.null"... need help please do.  

ok. the problem described above seems to be only in 64bit hardware (client
side) and flash 11.2.202.233 provided by Ubuntu 11.10. I'm still
investigating and upgrading to 12.04 my Dell precision M4500.  With Windows
vista business 64bit, Ubuntu 11.10 32bit and 12.04 32bit everythng work
fine.

ok. upgrading client ubuntu to 12.04 64bit doesn't solve. Below the log
record:
4/30/2012 16:20:05.939 [DEBUG] Uploading file : ANIP - webinar TP.pdf
4/30/2012 16:20:05.939 [DEBUG] Uploadling presentation name:
ANIP---webinar-TP
4/30/2012 16:20:06.001 [ERROR] An error occured while uploading the file.
[IOErrorEvent type="ioError" bubbles=false cancelable=false eventPhase=2
text="Error #2038"]

anyone can help me? What does it mean Error #2038 ? What is the
cause/reason?

Also, take a look at /var/log/bigbluebutton/bbb-web.log for clues.

Richard

hi Richard, thanks. Below requested info.

disk space left on server
Filesystem            Size  Used Avail Use% Mounted on
/dev/xvda1            7,9G  2,0G  5,9G  26% /
devtmpfs             1001M   84K 1001M   1% /dev
none                 1002M     0 1002M   0% /dev/shm
none                 1002M   52K 1002M   1% /var/run
none                 1002M     0 1002M   0% /var/lock
none                 1002M     0 1002M   0% /lib/init/rw
tmpfs                  24K   16K  8,0K  67% /var/gandi

LOG for clues (/var/log/bigbluebutton/bbb-web.log)

2012-05-01 12:53:29,816 DEBUG
[org.codehaus.groovy.grails.web.context.GrailsContextLoader] -
[GrailsContextLoader] Loading context. Creating parent application context
2012-05-01 12:53:32,511 WARN
[org.codehaus.groovy.grails.commons.GrailsApplicationFactoryBean] - Class
with name [DataSource] was not found, and hence not loaded. Possible empty
class or script definition?
2012-05-01 12:53:43,656 DEBUG
[org.codehaus.groovy.grails.web.context.GrailsConfigUtils] -
[GrailsContextLoader] Configurating Grails Application
2012-05-01 12:53:46,531 DEBUG [grails.spring.BeanBuilder] - Creating
messageSource with basenames: [WEB-INF/grails-app/i18n/messages,
WEB-INF/grails-app/i18n/jsecurity]
2012-05-01 12:53:46,707 INFO [grails.spring.BeanBuilder] -
[RuntimeConfiguration] Configuring data source for environment: production
2012-05-01 12:53:47,462 DEBUG [grails.spring.BeanBuilder] - Configuring
controller org.bigbluebutton.web.controllers.PresentationController
2012-05-01 12:53:47,482 DEBUG [grails.spring.BeanBuilder] - Configuring
controller org.bigbluebutton.web.controllers.ApiController
2012-05-01 12:53:56,047 INFO
[org.codehaus.groovy.grails.scaffolding.DefaultGrailsTemplateGenerator] -
Scaffolding template generator set to use resource loader
org.codehaus.groovy.grails.commons.spring.GrailsWebApplicationContext@27cb0 1e3:
display name
[org.codehaus.groovy.grails.commons.spring.GrailsWebApplicationContext@27cb 01e3];
startup date [Tue May 01 12:53:51 CEST 2012]; parent:
org.springframework.web.context.support.XmlWebApplicationContext@fcdfd19
2012-05-01 12:53:56,487 DEBUG
[org.codehaus.groovy.grails.beans.factory.UrlMappingFactoryBean] -
[UrlMappingFactoryBean] Creating URL mappings as...
2012-05-01 12:53:56,489 WARN
[org.codehaus.groovy.grails.web.servlet.mvc.GrailsUrlHandlerMapping] -
Neither 'urlMap' nor 'mappings' set on SimpleUrlHandlerMapping
2012-05-01 12:53:56,530 DEBUG [net.sf.ehcache.config.ConfigurationFactory]
- Configuring ehcache from InputStream
2012-05-01 12:53:56,541 DEBUG
[net.sf.ehcache.config.DiskStoreConfiguration] - Disk Store Path:
/tmp/tomcat6-tmp/jsecurity-ehcache
2012-05-01 12:53:56,548 DEBUG [net.sf.ehcache.config.ConfigurationHelper] -
No CacheManagerEventListenerFactory class specified. Skipping...
2012-05-01 12:53:56,548 DEBUG [net.sf.ehcache.config.ConfigurationHelper] -
No CachePeerListenerFactoryConfiguration specified. Not configuring a
CacheManagerPeerListener.
2012-05-01 12:53:56,548 DEBUG [net.sf.ehcache.config.ConfigurationHelper] -
No CachePeerProviderFactoryConfiguration specified. Not configuring a
CacheManagerPeerProvider.
2012-05-01 12:53:56,559 DEBUG [net.sf.ehcache.config.ConfigurationHelper] -
No BootstrapCacheLoaderFactory class specified. Skipping...
2012-05-01 12:53:56,559 DEBUG [net.sf.ehcache.config.ConfigurationHelper] -
No CacheLoaderFactory class specified. Skipping...
2012-05-01 12:53:56,559 DEBUG [net.sf.ehcache.config.ConfigurationHelper] -
No CacheExceptionHandlerFactory class specified. Skipping...
2012-05-01 12:53:56,560 DEBUG [net.sf.ehcache.config.ConfigurationHelper] -
No BootstrapCacheLoaderFactory class specified. Skipping...
2012-05-01 12:53:56,560 DEBUG [net.sf.ehcache.config.ConfigurationHelper] -
No CacheLoaderFactory class specified. Skipping...
2012-05-01 12:53:56,560 DEBUG [net.sf.ehcache.config.ConfigurationHelper] -
No CacheExceptionHandlerFactory class specified. Skipping...
2012-05-01 12:53:56,566 DEBUG [net.sf.ehcache.store.DiskStore] - Deleting
data file org.jsecurity.realm.text.PropertiesRealm-0-accounts.data
2012-05-01 12:53:56,569 DEBUG [net.sf.ehcache.store.MemoryStore] -
Initialized net.sf.ehcache.store.LruMemoryStore for
org.jsecurity.realm.text.PropertiesRealm-0-accounts
2012-05-01 12:53:56,570 DEBUG [net.sf.ehcache.store.LruMemoryStore] -
org.jsecurity.realm.text.PropertiesRealm-0-accounts Cache: Using
SpoolingLinkedHashMap implementation
2012-05-01 12:53:56,570 DEBUG [net.sf.ehcache.Cache] - Initialised cache:
org.jsecurity.realm.text.PropertiesRealm-0-accounts
2012-05-01 12:53:56,753 INFO [org.asteriskjava.fastagi.DefaultAgiServer] -
Thread pool started.
2012-05-01 12:53:56,762 INFO [org.asteriskjava.fastagi.DefaultAgiServer] -
Listening on *:4573.
2012-05-01 12:53:57,696 DEBUG
[org.codehaus.groovy.grails.web.converters.configuration.ConvertersConfigur ationInitializer]
- Initializing Converters Default Configurations...
2012-05-01 12:53:57,696 DEBUG
[org.codehaus.groovy.grails.web.converters.configuration.ConvertersConfigur ationInitializer]
- Initializing default JSON Converters Configuration...
2012-05-01 12:53:57,705 DEBUG
[org.codehaus.groovy.grails.web.converters.configuration.ConvertersConfigur ationInitializer]
- Using default JSON Date Marshaller
2012-05-01 12:53:57,733 DEBUG
[org.codehaus.groovy.grails.web.converters.configuration.ConvertersConfigur ationInitializer]
- Initializing default XML Converters Configuration...
2012-05-01 12:53:58,853 WARN
[org.codehaus.groovy.grails.plugins.DefaultGrailsPlugin] - No JSecurity
realms configured - access control won't work!
2012-05-01 12:53:58,853 INFO
[org.codehaus.groovy.grails.web.context.GrailsConfigUtils] -
[GrailsContextLoader] Grails application loaded.
2012-05-01 12:53:58,955 DEBUG [grails.app.bootstrap.BootStrap] -
Bootstrapping bbb-web
2012-05-01 12:54:07,987 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
ApiController#create
2012-05-01 12:54:07,987 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
ApiController#doChecksumSecurity
2012-05-01 12:54:07,989 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
checksum: 0bfeccee321926940df53d90c6893d0b69bfc082; query string:
name=TEST+funzionalit%C3%A0&meetingID=TEST&attendeePW=*<password>*
&moderatorPW=*<password>*
&voiceBridge=73591&logoutURL=&welcome=Benvenuto+all%27evento+-+%25%25CONFNA ME%25%25+-+%28int.id.%25%25CONFNUM%25%25%29.+Per+partecipare%2C+attiva+le+c uffie+%28opzionalmente+anche+la+webcam%29+con+i+pulsanti+in+alto+a+sinistra .+&checksum=0bfeccee321926940df53d90c6893d0b69bfc082
2012-05-01 12:54:07,998 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
query string after checksum removed:
name=TEST+funzionalit%C3%A0&meetingID=TEST&attendeePW=test&moderatorPW=*
<password>*
&voiceBridge=73591&logoutURL=&welcome=Benvenuto+all%27evento+-+%25%25CONFNA ME%25%25+-+%28int.id.%25%25CONFNUM%25%25%29.+Per+partecipare%2C+attiva+le+c uffie+%28opzionalmente+anche+la+webcam%29+con+i+pulsanti+in+alto+a+sinistra .+
2012-05-01 12:54:08,012 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
our checksum: 0bfeccee321926940df53d90c6893d0b69bfc082
2012-05-01 12:54:08,013 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
checksum ok: request passed the checksum security check
2012-05-01 12:54:08,013 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
passed parameter validation - creating conference
2012-05-01 12:54:08,037 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
Substituting keywords
2012-05-01 12:54:08,049 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
Conference created: DynamicConference: d800b848-6c51-4445-943f-eb6429df7136
[TEST|73591]:TEST funzionalit?
2012-05-01 12:54:08,170 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
Rendering as xml
2012-05-01 12:54:08,506 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
ApiController#isMeetingRunning
2012-05-01 12:54:08,507 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
ApiController#doChecksumSecurity
2012-05-01 12:54:08,507 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
checksum: 6297a1369d3e07e93827a97517c00cfac50c1686; query string:
meetingID=TEST&checksum=6297a1369d3e07e93827a97517c00cfac50c1686
2012-05-01 12:54:08,507 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
query string after checksum removed: meetingID=TEST
2012-05-01 12:54:08,508 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
our checksum: 6297a1369d3e07e93827a97517c00cfac50c1686
2012-05-01 12:54:08,508 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
checksum ok: request passed the checksum security check
2012-05-01 12:54:08,553 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
ApiController#getMeetingInfo
2012-05-01 12:54:08,554 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
ApiController#doChecksumSecurity
2012-05-01 12:54:08,554 DEBUG
[grails.app.controller.org.bigbluebutton.web.controllers.ApiController] -
checksum: 659967c988f737bbccbe66b64bbbd3c5c47b8355; query string:
meetingID=TEST&password=<*password*

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