Hi Erik,
some additional hint because of our experience with SAP HANA studio (independent from the corrupt installation package).
We had always problem with our SAP HANA Studio Installations especially when we wanted to update them to the newest release.
Therefore we now just use standard Eclipse Kepler and install the SAP HANA Tools from the repository site (https://tools.hana.ondemand.com/kepler). Until that all works perfect and also the updates works without problems.
Regards,
Florian