Well, I’m getting the following error
PHP Notice: Undefined index: type in C:\testlinkwww\testlink\install\installCheck.php on line 41
Their upgrade instructions are very simple,
They first say to copy the old config files to the new folder.
That doesn’t work exactly because it complained initially about an unknown SMTP variable in the old config file. So I had to comment out that variable.
After doing that it got further along only to fail with the error above.
This is when running the install/index.php which gives you a choice of migrating from 1.8.x to 1.9.1.