.NET Framework 4.5.2 Setup has failed

The .NET Framework installer crashes (or at least the following failed message pops up) before even starting to install. On a windows 7 machine without SP1 although I've read this shouldn't matter.

I've tried running as administrator, uninstalling all .NET stuff from the control panel, using the .NET repair tool and the cleaner tool. Have tried both web and offline installer. Nothing helps.

Is there anything else I can try? As it seems to crash before installing, maybe there's a way I can manually extract and start the install?

Problem signature:
  Problem Event Name:   VSSetup
  Problem Signature 01: Microsoft .NET Framework 4.5.2 Setup
  Problem Signature 02: 4.5.51209
  Problem Signature 03: 12.0.51209.34209
  Problem Signature 04: 1
  Problem Signature 05: unknown
  Problem Signature 06: None_UI_Interactive_Crash
  Problem Signature 07: 0xc0000005
  Problem Signature 08: 0
  Problem Signature 09: unknown
  OS Version:   6.1.7600.2.0.0.256.1
  Locale ID:    1033

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Update
Have installed SP1 via windows update, but still getting the error. Slowly going through more windows updates/reboots to see if they fix it.

Update
Still no luck. Windows is now stuck indefinitely "checking for updates" and the .NET installer still crashes.

The Sp1 matters here. The download pages says it requires the Sp1:

Supported Operating System Windows 7 Service Pack 1

You need to install the Windows 7 Sp1 first, otherwise you can't install .Net Framework 4.5.2