Com_virtuemart Lang_Is_empty error after sync media to VirtueMart

[gerxlam]

Dear Sir,

I first time to install VirtueMarkt v2.0.0 and its AIO., and then install the zh-tw language pack already.

at the installing time, it can display error show as the picture attached.

It can show normal product items as chinese lanugage.....

However, after I press the "sync media to VirturMarket" button at the Tool-> Tools -> DB Tool (Tag)......

The problem come out after sync it....!!!!!! It show the error popup "Com VirtueMart Lang Is Empty" !!!!

then, the default layout cannot show any product.!!!! (at the website)

What problem it is ? How can I fix it?

Please advise

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