How to fix 'A communication error has occurred' when previewing DLC songs in Rock Band 3 on Wii
7WARNING - I will NOT be held responsible for any damages the methods shown in this video may cause to yours or someone else's hardware, including loss of use of such devices and/or loss of profits from the resulting inability to use such devices. Any information you choose to put into use from this video is done AT YOUR OWN RISK.
This video will show you a workaround on how to avoid replicating 'A communication error has occurred' when previewing downloadable content songs in the RockBand 3 music store on Nintendo Wii. Currently, all Rock Band Network (RBN) songs produce this issue no matter what (when previewed) and the only way I have found to preview these songs is to look them up on YouTube (sadly). However, once this issue starts producing when previewing non-RBN DLC content, and continues to persist with every preview, then sadly a power down and power up of the Nintendo Wii in order to flush the temporary buffer memory that has become full of preview data is needed. This workaround can become very useful, especially when considering the current sale that Harmonix has going on on many commercially successful DLC songs in the Rock Band Music Store (at $1 a song or 100 Nintendo Wii Points, it is conceivable that you may be previewing MANY DLC songs in a row : )
UPDATE: Sadly, the RESET method of flushing out the Nintendo Wii's temporary buffer memory only works ONCE, and by the second time this 'communication error' occurs, you MUST power down and power back up your Wii, else the 'communications error' will immediately reappear on the next song preview.
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RodneyDickson presently has 77,662 views for Rock Band 3 across 15 videos, and about 2 hours worth of Rock Band 3 videos were uploaded to his channel. This makes up 1.15% of the content that RodneyDickson has uploaded to YouTube.