No, this is not a problem, you can delete it once you have fully installed the program. Someone asked the same question as you did in this thread:
You may want to save it or back it up if you ever need to reinstall in the future. However, you can also get the full NIS 2010 installation package from here, if you want to keep the full installer as a backup:
If you are experiencing an issue that needs urgent assistance please visit our customer support area:
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