Unable to run moveit because of assimp packages

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When I try to run roslaunch baxter_moveit_config demo_baxter.launch, I get the error

/opt/ros/indigo/lib/rviz/rviz: symbol lookup error: /opt/ros/indigo/lib/libgeometric_shapes.so: undefined symbol: _ZN6Assimp8Importer18SetPropertyIntegerEPKciPb

and it crashes. These are my assimp packages:

$ apt list --installed | grep assimp
assimp-utils/trusty,now 3.0~dfsg-2 amd64 [installed,upgradable to: 3.2~dfsg-3~urp8+1]
libassimp-dev/trusty,now 3.2~dfsg-3~urp8+1 amd64 [installed]
libassimp-doc/trusty,now 3.0~dfsg-2 all [installed,upgradable to: 3.2~dfsg-3~urp8+1]
libassimp3/trusty,now 3.2~dfsg-3~urp8+1 amd64 [installed,automatic]
python-pyassimp/trusty,now 3.2~dfsg-3~urp8+1 all [installed]

I tried to solve it according to a previous thread but the mentioned solution did not work.

Any help? I feel like I have tried everything that I could but keep going in circles...

EDIT: This is what I did previously:

My assimp libraries were too high, so i reverted them to 3.0 manually (I downloaded the .deb file from launchpad and installed them using dbpk)

$ apt list --installed | grep assimp
assimp-utils/trusty,now 3.0~dfsg-2 amd64 [installed,upgradable to: 3.2~dfsg-3~urp8+1]
libassimp-dev/trusty,now 3.0~dfsg-2 amd64 [installed,upgradable to: 3.2~dfsg-3~urp8+1]
libassimp-doc/trusty,now 3.0~dfsg-2 all [installed,upgradable to: 3.2~dfsg-3~urp8+1]
libassimp3/trusty,now 3.0~dfsg-2 i386 [installed,upgradable to: 3.2~dfsg-3~urp8+1]
python-pyassimp/trusty,now 3.0~dfsg-2 all [installed,upgradable to: 3.2~dfsg-3~urp8+1]

However, once that was done, I would get this error message when starting rviz:

/opt/ros/indigo/lib/rviz/rviz: error while loading shared libraries: libassimp.so.3: wrong ELF class: ELFCLASS32

since this didnt work, I did a sudo apt-get -f install again and ended up with the 3.2 assimp versions as mentioned above.