Ajsoft,
Sorry that you are seeing problems. It might be an issue with incomplete or corrupt download.
1. Can you please clarify if you are seeing the invalid zip issue only with the Angular IDE download file ? Are other smaller or larger zip files which open fine?
2. Can you please check if the file size and md5 sum of the downloaded zip file matches with the values mentioned in the Download page? For your convenience I am pasting the values here : Size: 184mb | md5: f6a72808db71f27ea58485f50ebe8bdb. If the values do not match, then please download the installer once again.
3. Please check if there is any antivirus software or firewall blocking the installer download. Please also try downloading the file with a different browser to rule out browser specific issues.
If you are still seeing issues, please share with us the OS and version details for further investigation.
Please let us know how it works for you.
–Swapna
MyEclipse Support