Hey,
I am trying to upgrad my Neos installation to 5.0. I followed the instructions from the upgrade site (https://docs.neos.io/cms/references/upgrade-instructions/upgrade-instructions-4-3-5-0).
When I run “composer update” I get the following message:
Problem 1
- Installation request for neos/redirecthandler-neosadapter 3.1.0 -> satisfiable by neos/redirecthandler-neosadapter[3.1.0].
- neos/redirecthandler-neosadapter 3.1.0 requires neos/neos >=3.0 <5.0 || dev-master -> satisfiable by neos/neos[3.0.0, 3.0.1, 3.0.10, 3.0.11, 3.0.12, 3.0.13, 3.0.14, 3.0.15, 3.0.16, 3.0.17, 3.0.18, 3.0.19, 3.0.2, 3.0.20, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.0.7, 3.0.8, 3.0.9, 3.0.x-dev, 3.1.0, 3.1.1, 3.1.10, 3.1.11, 3.1.12, 3.1.13, 3.1.14, 3.1.15, 3.1.16, 3.1.17, 3.1.18, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.1.8, 3.1.9, 3.1.x-dev, 3.2.0, 3.2.1, 3.2.10, 3.2.11, 3.2.12, 3.2.13, 3.2.14, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.2.6, 3.2.7, 3.2.8, 3.2.9, 3.2.x-dev, 3.3.0, 3.3.1, 3.3.10, 3.3.11, 3.3.12, 3.3.13, 3.3.14, 3.3.15, 3.3.16, 3.3.17, 3.3.18, 3.3.19, 3.3.2, 3.3.20, 3.3.21, 3.3.22, 3.3.23, 3.3.24, 3.3.25, 3.3.3, 3.3.4, 3.3.5, 3.3.6, 3.3.7, 3.3.8, 3.3.9, 3.3.x-dev, 4.0.0, 4.0.10, 4.0.11, 4.0.12, 4.0.13, 4.0.14, 4.0.15, 4.0.16, 4.0.17, 4.0.18, 4.0.19, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.0.8, 4.0.9, 4.0.x-dev, 4.1.0, 4.1.1, 4.1.10, 4.1.11, 4.1.12, 4.1.13, 4.1.14, 4.1.15, 4.1.16, 4.1.17, 4.1.18, 4.1.2, 4.1.3, 4.1.4, 4.1.5, 4.1.6, 4.1.7, 4.1.8, 4.1.9, 4.1.x-dev, 4.2.0, 4.2.1, 4.2.10, 4.2.11, 4.2.12, 4.2.13, 4.2.14, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.2.8, 4.2.9, 4.2.x-dev, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5, 4.3.x-dev, dev-master] but these conflict with your requirements or minimum-stability.
Problem 2
- neos/demo 6.0.0 requires flowpack/neos-frontendlogin ^4.0 -> satisfiable by flowpack/neos-frontendlogin[4.0.0].
- Installation request for neos/demo ^6.0 -> satisfiable by neos/demo[6.0.0].
- Conclusion: don't install neos/neos 5.0.2
- Installation request for neos/redirecthandler-databasestorage ~3.0 -> satisfiable by neos/redirecthandler-databasestorage[3.0.0].
- Conclusion: don't install neos/flow 6.0.1
- flowpack/neos-frontendlogin 4.0.0 requires neos/neos >=5.0 || dev-master -> satisfiable by neos/neos[5.0.0, 5.0.1, 5.0.2].
- neos/neos 5.0.0 requires neos/flow ~6.0.0 -> satisfiable by neos/flow[6.0.0, 6.0.1].
- neos/neos 5.0.1 requires neos/flow ~6.0.0 -> satisfiable by neos/flow[6.0.0, 6.0.1].
- Conclusion: don't install neos/flow 6.0.0
Hope someone can help me. I am realy excited about the new features and cant wait to use them 
David