# Revision history [back]

### How can play well with the samples?

Hi everyone, I am a new learner on ALLJOYN, quite interested and I want to dig deep into it. but after compilation successfully with the first sample at https://wiki.allseenalliance.org/develop/building_and_running, I run into an error when try to connect the two apps:

On one terminal: [guofu@7465 bin]$./ConsumerService Begin Consumer Application. (Press CTRL+C to end application) Enter in a list of app names (separated by ';') you would like to receive notifications from. Empty list means all app names. 6.173 * ERROR ALLJOYN external ...e/src/BusAttachment.cc:545 | BusAttachment::Connect failed: ER_BUS_TRANSPORT_NOT_AVAILABLE* Could not initialize BusAttachment. cleanup() - start cleanup() - conService 6.174 TRACE Notification external ...NotificationService.cc:232 | Shutdown cleanup() - Receiver cleanup() - end [guofu@7465 bin]$

On another:

[guofu@7465 bin]$./ProducerBasic 0.903 ** ERROR ALLJOYN external ...e/src/BusAttachment.cc:545 | BusAttachment::Connect failed: ER_BUS_TRANSPORT_NOT_AVAILABLE Could not initialize BusAttachment. [guofu@7465 bin]$

Questions: 1. How can I make the first sample work? I want to see what they can do. 2. How can I adapt the low layer settings to make different applications on different platforms? Over Wi-Fi, LAN or even they run on one same PC... 3. For beginners, details guidance is much important for them to get understood and be able to use the well-designed software archtecture.