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Editorial Team
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Asked: 2026-06-01T06:59:18+00:00

I have a problem with Map objects, while using Gravity. All messages works ok,

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I have a problem with Map objects, while using Gravity. All messages works ok, except the ones which includes Map objects. They throw the following exception:

ArgumentError: Error #2173: Could not read the object in the stream. though Class:org.granite.collections.BasicMap do not implement flash.utils.IExternalizable,but we know that it's Class:externalizable by its alias.

I’ve found that this error occurs when you do not include granite-essentials.swc, but I don’t think that’s the case, because normal messaging using RemoteObject works fine, even with Map objects.
Any help will be appreciated.

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1 Answer

  1. Editorial Team

    The problem been solved by adding the following line into my GravityManager class:
    registerClassAlias("org.granite.collections.BasicMap", BasicMap);
    I hope it will be useful for someone.

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