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Dear friends,
i just installed texstudio after miktex. Everything went good. when i create a new pdf ans start writing, i can't preview it ?? i don't know why ? i'm also running windows 8. may be that's the reason ?
Another question, which is better, texstudio or texmakers ??

Thanks a lot in advance.

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problem fixed , i was so in a hurry to try i forgot documentclass and begin documents