taps migration failing from sqlite to postgres rails4, ruby 1.9.3

Question

I am trying to migrate my Rails app to Postgresql for heroku however i can\'t get taps to get the data from my SQLite3 database, here is what i have tried:

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Answer 1

This worked for me:

1. I went up one directory from my project directory then did the following
2. gem install taps
3. gem uninstall rack
4. gem install rack --version 1.0.1

Start the sqlite server from the project directory, in the 'one up directory' run:

taps pull postgres://f3@localhost/f3_development http://user:password@localhost:5000

Then did the migration as before and it worked. I had rack 1.5.2 installed so I had to remove that and replace it with rack 1.0.1. I'm using ruby 2.0.0-p0 and rails 4.0.0.beta1

It seems only the pull command needed the old version of rack so the server could run on the newer 1.5.2 version...