For all those having trouble installing proteus 7.2 sp2. Please follow these points -

1. Download and install 7.2 sp0 as per the link given my sklchan. The link is -
hxxp://rapidshare.com/files/61011958/Pr ... p.zip.html

2. After this download and install 7.2 sp2 upgrade as per the following link given by sklchan -
hxxp://rapidshare.com/files/61012980/Pr ... e.zip.html

3. You do not need the 7.2 sp2 crack 1. Simply download and run the 7.2 sp2 crack 2 from -
hxxp://rapidshare.com/files/61025816/Pr ... 3.rar.html

Thats it! You will have a working version of proteus 7.2 sp2 up and running.

Proteus 7.1---7.2---7.2Sp2 hepsi burda
http://rapidshare.com/files/63746078/Pr ... k.rar.html

For portable version use this file (no setup file needed):

Thinstall full version of Proteus 7.2 SP2 included Electra 1.6.7 (no installation needed)
http://rapidshare.com/files/61361285/Po ... l.zip.html

For full installation use these files:

Proteus 7.2 SP0 setup file
http://rapidshare.com/files/61011958/Pr ... p.zip.html

Proteus 7.2 SP2 update file
http://rapidshare.com/files/61012980/Pr ... e.zip.html

Proteus 7.2 SP2 crack 1 (use to crack all the library/model files) please select to BACKUP the original files during crack
http://rapidshare.com/files/61027697/Pr ... k.rar.html

Proteus 7.2 SP2 crack 2 (use the license file include here, rename some of the cracked exe or dll to enable this crack to patch it)
http://rapidshare.com/files/61025816/Pr ... 3.rar.html

Electra v1.6.7 (just extract to the electra folder and overwrite all the files)
http://rapidshare.com/files/62678541/El ... 67.7z.html

Regarding the READ ONLY setting for certain files I'm not sure how it work but after both crack files patching the program work perfectly without any error or exit during project building.

All files credits should give to all their respective cracker/provider.