Started getting mod conflicts on reloading my save. Not entirely sure what is happening but the error was the same both times...

As follows....

The mod Bob's Logistics Mod (1.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event on boblogistics::on_configuration_changed
The mod Spidertron Engineer (1.2.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event SpidertronEngieer::on_technology_effects_reset {ID 100)
SpidertronEngineer/control.lua:354:bad argument # 1 of 2 to 'pairs' (table expected, got nil)
stack traceback:
(C):in function 'pairs'
SpidertronEngineer/control.lua:354:in function
<SpidertronEngineer/control.lua:352>
stack traceback:
boblogistics/control.lua:319:in function
<boblogistics/control.lua:314>
stack traceback:
(C):in function "reset_technology_effects"
boblogistics/control.lua:319: in function
<boblogistics/control.lua:314>

Just got this error

The mod Spidertron Engineer (1.2.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event SpidertronEngineer::on_research_finished (ID 18)
SpidertronEngineer/utils/table-utils.lua:2: bad argument #1 of 2 to 'pairs' (table expected, got nil)
stack traceback:
[C]: in function 'pairs'
SpidertronEngineer/utils/table-utils.lua:2: in function 'contains'
SpidertronEngineer/control.lua:345: in function <SpidertronEngineer/control.lua:343>

Thanks for the reports. Both these crashes were essentially the same cause, and fixed in 1.2.1 (coming shortly!).

Tested recently and was able to load my save. Thanks for the fix!