Installation Issue

[Shivi1771]

When submitting an issue please indicate the following information:

• Name, version and date of the document, (e.g. OMA-TS-LightweightM2M-V1_0-20160802-C):OMA LightWeight M2M 1.0
• Section of the document, (e.g. section: 6.2):
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There's an issue while installing this DevKit because when I try to manually add_on it after giving the path in the extension file of the default profile it says the file is corrupted. Neither is there any prompt from firefox side for the installation of the extension. Please kindly help for its smooth installation.