I do have that fix in place. I added the tag_debug for time_est. I'm not sure which value causes the error, but I see:
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Tag Debug: corr_est
Input Stream: 00
Offset: 37840 Source: corr_est_cc0 Key: time_est Value: 0.363934
Offset: 37851 Source: corr_est_cc0 Key: time_est Value: -0.478847
Offset: 37871 Source: corr_est_cc0 Key: time_est Value: 0.226898
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Tag Debug: corr_est
Input Stream: 00
Offset: 38211 Source: corr_est_cc0 Key: time_est Value: 0.379335
Offset: 38341 Source: corr_est_cc0 Key: time_est Value: -0.205535
Offset: 38351 Source: corr_est_cc0 Key: time_est Value: 0.129156
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Tag Debug: corr_est
Input Stream: 00
Offset: 38981 Source: corr_est_cc0 Key: time_est Value: -0.0236422
----------------------------------------------------------------------
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Tag Debug: corr_est
Input Stream: 00
Offset: 39911 Source: corr_est_cc0 Key: time_est Value: -0.270991
Offset: 39921 Source: corr_est_cc0 Key: time_est Value: -0.381561
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thread[thread-per-block[17]: <block msk_timing_recovery_cc (10)>]: mmse_fir_interpolator_cc: imu out of bounds.
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Tag Debug: corr_est
Input Stream: 00
Offset: 40221 Source: corr_est_cc0 Key: time_est Value: 0.0493416
Offset: 40231 Source: corr_est_cc0 Key: time_est Value: -0.022505
Offset: 40271 Source: corr_est_cc0 Key: time_est Value: 0.305939
Offset: 40292 Source: corr_est_cc0 Key: time_est Value: 0.130002
Offset: 40302 Source: corr_est_cc0 Key: time_est Value: -1.17942
Offset: 40322 Source: corr_est_cc0 Key: time_est Value: 0.117131
----------------------------------------------------------------------
----------------------------------------------------------------------
Tag Debug: corr_est
Input Stream: 00
Offset: 41311 Source: corr_est_cc0 Key: time_est Value: 0.338163
----------------------------------------------------------------------
----------------------------------------------------------------------
Tag Debug: corr_est
Input Stream: 00
Offset: 41452 Source: corr_est_cc0 Key: time_est Value: -0.18281
----------------------------------------------------------------------
----------------------------------------------------------------------
Tag Debug: corr_est
Input Stream: 00
Offset: 41522 Source: corr_est_cc0 Key: time_est Value: 0.491506
Offset: 41651 Source: corr_est_cc0 Key: time_est Value: 0.151281
Offset: 41942 Source: corr_est_cc0 Key: time_est Value: 0.0604672
Offset: 41952 Source: corr_est_cc0 Key: time_est Value: -0.191828
----------------------------------------------------------------------
----------------------------------------------------------------------
Tag Debug: corr_est
Input Stream: 00
Offset: 42582 Source: corr_est_cc0 Key: time_est Value: -0.281153
----------------------------------------------------------------------
----------------------------------------------------------------------
Tag Debug: corr_est
Input Stream: 00
Offset: 44901 Source: corr_est_cc0 Key: time_est Value: -0.495743
Offset: 44911 Source: corr_est_cc0 Key: time_est Value: 0.380034
----------------------------------------------------------------------
----------------------------------------------------------------------
Tag Debug: corr_est
Input Stream: 00
Offset: 45742 Source: corr_est_cc0 Key: time_est Value: -0.123585
Offset: 46022 Source: corr_est_cc0 Key: time_est Value: 0.0915709
----------------------------------------------------------------------
----------------------------------------------------------------------
Tag Debug: corr_est
Input Stream: 00
Offset: 46171 Source: corr_est_cc0 Key: time_est Value: 0.0782069
----------------------------------------------------------------------
----------------------------------------------------------------------
Tag Debug: corr_est
Input Stream: 00
Offset: 46763 Source: corr_est_cc0 Key: time_est Value: 0.0567441
Offset: 46773 Source: corr_est_cc0 Key: time_est Value: -1.31157
Offset: 46842 Source: corr_est_cc0 Key: time_est Value: -0.484528
----------------------------------------------------------------------
----------------------------------------------------------------------
Tag Debug: corr_est
Input Stream: 00
Offset: 47372 Source: corr_est_cc0 Key: time_est Value: -0.388704
----------------------------------------------------------------------