Rereferencing to mastoids after ICA

[jrook25]

I'm trying to rereference my data from the original CPz electrode to an average of the mastoid electrodes (M1 + M2) in eeglab2025.0.0. Before rereferencing I have removed two components from my dataset with an ICA. I am working with a 64-channel cap. When trying to rereference, I get the following error:

EEGLAB error in function eeg_checkset() at line 1038:
Index in position 1 exceeds array bounds. Index must not exceed 62.

Or in the command window:
Index in position 1 exceeds array bounds. Index must not exceed 62.

Error in eeg_checkset (line 1038)
tmpact = (EEG.icaweightsEEG.icasphereEEG.data(EEG.icachansind,1:1000);

Error in pop_reref (line 383):
EEG = eeg_checkset(EEG);

Error in ERP_preproc_SA (line 54):
EEG = pop_reref(EEG, [13 19], 'exclude', excludedChannelsreref)

Do you know how to solve this issue? Many thanks in advance!