Installation error : Unable to write entry

Hello,
installation give me error -


Unable to write entry . Mobile Joomla version 2.1.7.tar isn't installed on Joomla 2.5.28.
May I have your suggestions please
.
PROBLEM is solved : original file is TAR. Just repacked and zipped in ZIP format and Voila... Mobile Joomla is installed. Perfect component. Thank you !!!

Hello,

Good to know its all working. In case you have issues again (I hope not), please send us a screenshot and the URL of your Joomla site.

Let us know if you have further questions.

Best,

John Mark C.
Mobile Joomla! Support